The most members online in one day was 1,535, 02-20-2009.
45zip, 6:00amyoucampit, a.ffxi, Abomb, ackly, Adell, Agni, alek720, alextien, alixmchugh, AllanPC, Apathy Towards Lettuce, Apollo_san, Arihant, Arrow, ArvinG, asamo, Asator, Augre, ba3oo, Bahamut, Baldur, Bamboo, bamorie, Barbarian, Blackhawk, Blaize2, Blarye, BooTK, BoredHume, Brokenroad, brtev, Bugsey, busterblade, casles, Castro03, catapulte, cdogrdm, cgrindle1982, Chakakanagen, chochey, Cloak, cooleechang1, CowtownCanada, dantheocman, Darknessfalling, DarthMaul, dcupps, Derrian, Deva, Dirty, dizeazed, dmart07741, dom33x, Dom82, donar11, dragarn, drago305, Drakallll, DruidPriest, Duntor102, ebby, elc8745, Elixirm, ElvishPiper, Emaki, Epicwin, ErgoSum, erika, extreme, fanatt, ffxiplayerffxi, ffxiseller, fighting, firstn20, Flash, Foe, Foetus, FortunatO, forty6n2, forum-lover, freespirit, FriendlyBuyerSellerTrader, gamer4life92, gatorreefer, Genocide, geo1985, george41, germanguy, GHD, Grodrz, GummyBear, gunnex, Halfevil, Hines22, Hsei, hurilo999, IPreferDialUp, itemkeeper, itsarlty4, jakeblues, jerkfacetallguy, jerrynizzle, jg1125, jlb8685, joebiddy, joegrziwokk, Johnyblaze146, Jona, justice55, justine, ken1978, kendrah1, KenKramer, KenMcGinnis, kepogata, Khain, Khazran, Killerme, Kosovali61, Lechon, liamforbes, Lilbro, Lilith, llremora, Locky, Luisalejo, lve2raft, mai99, MastaWang, matthiro, Mauri, mch21689, medshwk, Meiza, menger, Metaraon, michaelj29, minihound, Mitsumoto, MJ9, Monarch, MonkeyZ, moonslice, murdoc rose, nahualito, navydoc, nesszak, nickk, Nightfox, NightHawk23, nikolas, Ninjanuker, Nismo, niterider, Noira, notme, Ocker, Odizzle84, OHGODWHATISTHIS, okamsrazor, onaum, onerike, OnionWarrior, OrestesCut, ororoo, OSUfan, pacino2k2, Pandalerium, Pantherfan, paul1260, peace221, pewpewz, PhantomPhan, Phate, pokemon, porthos, Proofy, psirusmojo, putty31, pwasma, QuittingWoWhelpMe, qwerty781, Ramza25, Rapinxx, rawrmeanslove, rayd, Razer382, rbrtfoo, rebelsrock77, rgarrido84, Robespierre, rotay, Rudryc, Sainty0187, sammut08, sangh, Sargy, Sargy1, Sauce, Scar41, Seniden, Setsuni, shield316, Slamcheeks, slayton, Slurx, Snowsuit, Sovelis, spotzero, Squidbillies, stcsoccerplya15, ste, stonedaily, sturz, supra86, Swift5, Tacoma, Takashi, Takius, tarutom, tbone13, TeeBee, Texas24, thasquall, That1guy, thyword99, Tim329, Timmi, tito42003, Tylerhawkins, unknownxz, Valkyrja, vegasace09, Velocity, vince.n, vxd00, westsider_x, white knight c97, WillC, witch, wowiezowie, wtimes3, xAbyssal55x, Xagra, xavier3, Xiphus, XI_TC, Yodz, Yuularauko, Zarlach

The most registrations in one day was 129, 06-06-2009.
Bamboo, Genocide, justine, Luisalejo, Ninjanuker, PhantomPhan, Sargy, Sargy1, unknownxz, wowiezowie

Robs2u (36), dark eldar (31), Under (29), jonasss (29), Seraphe, zerg68 (24), miuo (23), diablogg (23), Bramnuffins (21), ryggar (20), DanteZg (20), ryanmccx, kendoubleg (19), taurenmale (19), LeFreeour (18), ronnyboy (15)