This kind of thread has been tried a few times, never with much success. I started one a while ago, as I have a TON of comics for sale, and many I'm always trying to find. Here is my list of some of the top comics I'm looking for. If you have any, I have quite a few that I can trade for.
Abadazad: All
Abraham Stone: All
Abslom Daak: Dalek Killer: 1
Action Comics: -531, 534-535, 540, 542, 579-580, 822-828
Adventures On The Planet Of The Apes: All
All-Star Squadron: 21, 23, 39, 41-42, 47, 49, 67
Amazing Adventures: 1-2, 5, 8-9, 15, 17
Amazing Spider-Man: -195, 197-198, 200-202, 205-209, 211-212, 214-215, 217, 219-220, 222, 224-226, 229, 231-232, 234-237, 239-241, 243-246, 248-250, 278-279, 284-287, 290, 298-299, 301-306, 308-310, 314-316, 318-322, 332, 344-347, Annual 1-14, 16
Astonishing Tales: 1-14, 18-19, 21, 23-31, 35
Authority-Revolution: 9, 11-12
Avengers: 90-109, 111-117, 119-147, 149-150, 152-153, 155-156, 159-160, 162-165, 172-173, 177, 181, 183 Annual 1, 3-5, 7-8
Azrael: 37, 39, 49, 60, 99
Batgirl: 13-20, 22-24, 48, 51, 53, 58-59, 62-64, 67-73
Batgirl: Year One: 4-9
Batman: -420, 422-429, 551-552, 555-557, 559-560, 566-568, 571-573, 575-577, 579-582, 584-592, 597-607, 609-611, 613-619, 623, 627, 630, 635-642, 645, Annual 1-10
Batman-Gotham Knights: 73
Batman-Legends of the Dark Knight: 138-139, 142-143, 149-151, 175-181, 189, 192, 199, SP1
Beavis and Butthead: 5, 8, 14-28
Bill and Ted's Excellent Comic Book: 2-12
Blackhawk: -247, 249-250, 252, 256, 259, 267-273
Black Panther (vol. 1): 1, 3-5, 7-15
Blade (May 97): 1
Blade: Sins Of The Father (Oct 98): 1
Books Of Magic: 57, 61-63, 65-66, 71, 73, Ann. 1-3
Books Of Magic - Life During Wartime: 2-5, 14
Bozz Chronicles: 3, 5-6
Captain America: -158, 160, 162, 164-165, 168-176, 178, Annual 1-2, SP 1-2
Captain Carrot and His Amazing Zoo Crew: 5-14, 16-20
Captain Marvel: 1-3, 5-13, 15-18, 20-21, 24-25, 27-32, 34
Cat, The: 1-2
Conan The Barbarian: -43, 46, 49-50, 58-60, 67, Annual 1, SP 1
Crux: 27-29, 31-33
Daredevil: -15, 17-38, 45-103, 105-107, 115-116, 118, 120-124, Annual 1
Daredevil/Black Widow: Abattoir
Daredevil/Punisher: Child's Play
Darkchylde: 0, 3
Darkstars: 16-23, 25-38
Deathstroke, The Terminator: 33-41, 43-49, 51-60, Annual 2-3
Defenders: 1-5, 9-11, 13
Demon: 40, 42-47, 49-58, Ann.2
Detective Comics: -581, 583-587, 590, 593, 597, 717-719, 722, 725, 734, 736, 738-740, 743-746, 749-753, 756-758, 760-762, 764-769, 772, 774-786, 788, 790-796, 800-801, 804-808, 811-816, 821-822
Doc Savage: 3, 8 (Magazine 1-8)
Doctor Strange: 3, 5-10
Doctor Who: 4-7, 9-13, 18, 20-23
Doom Patrol (vol. 2): 47-65, 71-87, Annual 2
Doom Patrol (vol. 3): 3, 7-22
Dreadstar: 3, 5, 13-18, 20, 24-25, 30-32, 34, 40-64, Ann. 1
Dreadstar (vol. 2): 4-6
Dreadstar and Co.: 2-6
Dreams Of Darkchylde: 3-6
Elektra: Assassin: 7-8
Elektra Lives Again: 1
Elfquest: 1, 9-13
Elfquest: Recognition Summer 2001 Special: 2
Elfquest: Wolfshadow Summer 2001 Special: 1
Eternals: 1-3, 5-6, 10, 13-14, 16-17, 19, Ann. 1
Fantastic Four: -150, 152-162, 165-176, 178-179, 181-182, 184, 186-191, 193, 197-199, Annual 1-2, 4-9, SP 1
Fantastic Four: The Secret Story of Marvel's Cosmic Quartet
Fantasy Masterpieces: 1-8, 10
Fantasty Masterpieces (Vol. 2): 1, 8-14
Firestorm (vol. 1): 2-4
Firestorm (vol. 2): 3-6, 8-9, 13-15
First, The: 33-37
Flash (Vol. 2): 107-108, 110-111, 113-114, 117-118, 121, 125, 127, 130, 132, 136-141, 169, 205, 207-211, 215-217, 219-221, An. 7-11, GS1-2
Flash Gordon: 2
Gen12: 4-5
Gen13 (Mini): 2-3, 5
Gen13: 24-25, 28-32, 34, 36, 40, 42, 45-52, 55, 71, 74-76, 3D1
Gen13 (vol. 2): 0-6
Gen13 (vol. 3): 7
Gen13 Bootleg: 9, 18-20
Ghost: 31-36, Sp 2-3
Ghost Rider (vol. 1): 1-21, 24, 26-27
Giantkiller: 5
Giant-Size Avengers: 3-5
Giant-Size Conan: 1-2
Giant-Size Defenders: 1
Giant-Size Fantastic Four: 1-4, 6
Giant-Size Man-Thing: 1-4
Giant-Size Spider-Man: 1-3, 6
G.I. Joe, Order Of Battle: 4
G.I. Joe, A Real American Hero: 1-13, 15-31, 33-34, 36-38, 40-45, 50, 61, 68-83, 85-119, 121-135, 137, 139, 141, 143-149, 151-154, YB 1-3
G.I. Joe, Special Missions: 9-28
Girls: 1-2
Glory: 2, 4-5, 16, 19, 21, 23
Godzilla: (all)
Gotham Central: 1-3, 13, 18-22, 25-36, 38-40
Green Arrow (mini): 2-4
Green Arrow (Vol. 1): 69-70, 72, 75, 77-82, 84-86, 88-89
Green Arrow: 32-40, 44-45, 47-49, 51-54, 57-58, 67, 69-70
Green Lantern: 47, 68-75, 78, 83-85, 87, 90, 93-94, 96-107, 126, 129-130, 132-135, 174-175, 178, 180
Green Lantern Corps: 206-219
Guy Gardner: 13-14, 16-22, 27-31, 33-34, 36-37, 39-43, An. 1-2
Hawkgirl: 55, 57-58
Hawkman (vol.3): 4, 32-33
Hawkman (vol.4): 1-2, 6-13, 25, 27-28, 34, 38, 40-45
Hawkworld: 32
Hero For Hire: 1-5, 8-9, 11, 13
Howard The Duck Magazine: 1-5, 9
Hulk: Project H.I.D.E.
Hulk: Unchained: 1
Incredible Hulk: -200, 207-208, 212, 214-215, 218-224, 225-229, 236, 238-239, 241-252, 254-285, 289-291, 293-294, Annual 1-6, 8
Inhumans: 1-7, 9-10, 12
Invaders: 1-7, 9-16, 18-21, 30, 40, Ann. 1
Iron Fist: 1, 4-15
Iron Man: -71, 73-84, 86-87, 89-94, 97, 99-100, 102, 105-108, 110-114, 116-124, 126-128, 130, 132, Annual 1, 3-5
JLA: 3, 13-15, 42, 48, 50, 81, 83-85, 87-88, 90, 94-95, 97-99, 101-102, 106-114, Annual 2, GS1
JLA: Classified: 1-2, 22-23, 30-
JLA: Destiny: 3-4
JLA: Incarnations: 5
JSA: 11-12, 15-19, 49-55, 57, 60, 64-70, 72-74, Annual 1
Justice League America: SP(90-91)
Justice League Elite: 5, 7-11
Justice League of America: 145-169, 171-186, 188-196, 199, 203, 209, 211, 215, 217, 223, 244-247, 249-251
Justice League Task Force: 15, 33-35
Justice Society of America (Mini): 1-2, 8
Justice Society of America: 2-3, 5, 7-10
Kabuki Agents: 2-4, 6-7
Kabuki Reflections: 3
Karza: 2
Ka-zar (vol. 2): 8
Krypton Chronicles: 3
Leave It To Chance: 8-12
The Legion: 12, 19-38
Legionnaires: 6, 15-16, 24, 26-50, 52-67, 76, 79, Annual 2-3
Legion of Superheroes (vol. 4): 66-67, 69, 71, 74-79, 81-85, 87-93, 96-110, 1000000, Annual 6-7
Liberty Meadows: 1, Sourcebook
Lone Ranger and Tonto: 4
Machine Man: 2-10, 12, 14-16, 17, 19
Man-Thing: 1-4, 7, 14-16, 18, 21-22
Martian Manhunter: 20-21, 26, 28
Marvel Action Hour (Iron Man): 4-8
Marvel Action Hour (F4): 6-8
Marvel Age: 81, 89-91, 93-99, 101-105, 107-115, 119-125, 128-130, Annuals 3-4
Marvel Feature (75): 1, 7
Marvel Graphic Novel: 3, 19, 24, 28, 30, 32, 35
Marvel Premiere: 1-2, 4-10, 12, 14-16, 18-20, 22-30
Marvel Presents: 3-5, 7-12
Marvel Spotlight: 1-6, 9-10, 12-13, 19, 21-24, 29
Marvel Super-Heroes: 12-20, 24, 26-28, 30-32
Marvel Superheroes Secret Wars: 1, 4
Marvel Tales: 1-11, 13-16, 18, 20-25, 27, 30-37, 41-44, 46-50, 52-53, 55-61, 63-69, 71-75, 76-78, 80-96, 98-102, 104-108, 110-111, 113-116, 120-132, 134-136, 142-150, 154, 161-163, 166-168, 170-171, 173-181, 183-190, 193-194, 197-200, 202, 204-208, 210-212, 216-219, 222-226, 233, 236, 248-249, 252-253, 255-258, 261, 266, 271-272, 278, 283-284
Marvel Team-Up: 1-2, 4-13, 17, 23, 27, 29, 53
Master of Kung-Fu: 17-19, 21-23, 30, 36, 39
Monster Menance: 4
Ms. Marvel: 17-19, 21-22
Mystic: 10-11, 36-43
Nam, The: 65, 70-71, 74, 76-78, 80-84
Negation: 25-27
New Adventures Of Superboy: 1-10, 50
New Teen Titans(80): 2-4, 8-10
New Teen Titans(84): 14, 20, 22, 29-30, 38-40, An. 1
New Titans: 124-125, 128-130
Nick Fury, Agent Of Shield (Dec. 83): 1
Nick Fury vs. Shield: 1, 5
Night Breed: 14, 16, 24
Nightman: Ann. 1
Pitt: 16-20
Power Man/Iron Fist: 48
Power Of Shazam: 2, 5, 31, 33, 39, 42, 44-46, Annual 1, 1000000
Power of the Atom: 1-6, 15-18
Prime: 2-4, 8, 13-17, 19, Ann. 1
Prophet/Cable: 2
Punisher Armory: 1-10
Punisher/Black Widow: Spinning Doomsday's Web
Punisher Movie Special
Red Sonja (Vol. 1): 14-15
Ren & Stimpy: 4-9, 13-14, 20, 22-23, 25-26, 28, 30-33, 37, 40-44, SP 1-3, HS 1, Radio Daze, Around The World In A Daze, Four Swerks, Powdered Toastman's Cereal
Rising Stars: Visitations
Robin: 102, 107-108, 110-121, 123-125, 127-128, 133-134, 136-143, 145, 153-157
Saga of the Swamp Thing: 3-8, 11, 13-45, Ann. 1-2
Savage Dragon: 0, 33-36, 41-54, 57-58, 61, 71, 73-75, 77, 84-85, 87-88, 92-95, 100-102, 104-109, 114-115, 117-119, 122-123, 125-129
Savage Dragon Archives: 1, 4
Scion: 9-11, 29, 36-38, 40-42
Secret Origins: 1-2, 11, 20, 30, 38-39, 41, 45-46, 50, An. 3, Sp.1
Semper Fi: 4-6
Showcase '95: 1, 3, 5-6, 8-12
Sigil: 37, 40-41
Simpsons Comics: 12, 18, 24, 33-
Solution, The: 0, 13-17
Sovereign Seven: 13, 18, 25, 30-36
Spectre (3rd Series): 2-7, 10-13, 15-16, 18-20, 22, 26-31, 35, 39, 46, 48, 50-53, 59, 61
Spider-Man: The Manga: 1-31
Star Wars, A New Hope: 3
Star Wars, Boba Fett: 3
Star Wars, Jedi Academy: Leviathan: 2
Star Wars - Tales Of The Sith - Fall Of The Sith Empire: 1-3
Star Wars - X-Wing Rogue Squadron: 21, 25-28, 30, 32
Steel: 41, 44-52
Stormwatch-Team Achilles: 1, 4-6, 22
Strange Tales: -167, 169-170, 172-173, 184-186, Ann. 2
Superboy: 45-48, 51. 53-59, 75-77, 79-83, 85-86, 88, 94-100, 1000000
Superman (vol. 2): 130-132, 134-135, 161-167, 192, 201-203, 205-206, 210-211, 214, 216, 220, Annual 8-9, GS3
Supreme - The Return: 5-6
Swamp Thing (vol. 2): 47-52, 59-60, 62, 64-65, 73, 110-113, 115, 117-121, 124-125, 137-139, 141-142, 145-146, 148, 155-157, 160, 167, 170-171, Ann. 7
Swamp Thing (vol. 3): 10, 12-16, 18-20
Swamp Thing (vol. 4): 7, 19-21, 26-29
Teen Titans: 2, 6-7, 9-10, 15-20, 22-24, Ann. 1, '99
Teen Titans (vol. 3): 1-10, 12-28, 30-31
Thor: -201, 206-211, 215, 221, 224, 227, Annual 2, 4-5
Tick: 13, SP 1-2
Timespirits: 2-3, 5, 7-8
Titans/Legion Of Super-Heroes: Universe Ablaze: 1-4
Titans Secret Files: 2
Transformers: 2-4, 40, 42-45, 47-80
T2, Cybernetic Dawn: 0, 2-3
Ultraforce (vol. 1): 1, 4-8
Uncanny X-Men: 142, 144-146, 148-149, 155, 157-165, 168, 170, 172-174, 176, 181-183, 185-189, 191-199, 202, 204, 207-208, 210, Annual 1-2, 4
Vigilante: 20-50
Walking Dead: 1-16, 18
Warlord: 1-2, 5, 103-104, 106-108, 110-127
Watchmen: 7-8, 10
Way of the Rat: 5, 22-24
Wetworks: 6-7, 10, 12-13, 15, 17, 19-23, 25-43
What The-?!: 17, 25
Wildcats: 43-50, Ann. 1
Wolverine: 1-9
Wonder Woman (Vol. 2): 30-33, 35-51, 53-57, 62-64, 66-73, 75-95, 122, 124, 128-129, 131-132, 134-141, 160, 162, 167, 170, 173-174, 177, 181, 183-185, 188-193, 196, 200, 203, 205-109, 211-212, 214, 216-218, 1000000, Ann 2, 6-7
Y, The Last Man: 10, 31, 51-52, 54-59