It had to be done sometime, so I decided I would make the topic. You only get one FC for all of your games on the 3DS. Now this won't be cluttered with FC's for every game somebody owns. I will try to keep an updated list, but forgive me if I forget to update it. I also think its a good idea to set your status message as your username, since most people use their real names.
shedinja3: 3952-7006-5092
Shiron: 1977-0155-9006
FlibberMagee: 4425-1474-1599
Oculin: 2277-6630-8674
Concept: 0774-4232-4188
TheNintendoMaster03: 2148-8145-2330
SeriousKano: 3007-8064-4926
Alison: 0044-2809-9830
Sonic62: 2148-8148-9184
MSico: 3007-8074-7903
NicoCW: 1375-7198-9789
Kylethedarkn: 3523-2035-6983
StandAlone3: 0602-6258-1485
xChaosSaberx: 2492-4123-0695
MilesTheWolfman: 3050-7575-1384
BroBuzz: 0989-1735-9050
shringan: 1934-0645-0441
Mplay213: 5155-2908-1528
Mr. Olimario: 1590-4704-3722
Ratheronfire: 1160-9721-3980
AlanEdgeHead: 5026-4443-4522
Muzy72: 2234-7157-1817
Tanexion: 1375-7205-3826
wee187: 1934-0682-1908
jolt1030: 1676-3703-8374
xSnappsx: 2793-0609-5883
DNAbro: 4768-7443-4456
LoboRaptorLo: 2878-9623-6392
Pokeyph: 2707-1652-7021
jbocas: 5026-4413-2030
Eonis: 0946-2293-7527
hart37: 0473-7832-4048
MultipurposeGamer: 3308-4625-1207
Chronosv2: 0731-5091-1150
Baltes: 5327-2008-3561
jmanskater2: 4811-7013-7804
Emobagels: 5241-1996-8877
Pictocheat: 3050-7686-7773
the1stpkmnfan: 4854-6587-1899
vakamajordan 1332-7861-6016
dryuriev777 5026-4591-4539
torimori 3523-2239-7017
Trust Me I Got This 3007 - 8124 - 3374
lewigi2012 0130-1781-0509
pikminsquad2148 4854-6734-8569
Overload 1461-6211-3946
maj495 1461-6647-4788
Dellyflo 2320-6543-6523
Letifer 0216-1615-4772
Marche100 4597-0342-7527
Snowman 5413-0010-1292
Typhlosion1990 3265-5894-2977
16bitgeek 1977-0159-6656
Brad64LP 4511 0466 9842
ojamamask 2621-3795-8087
Mplay123 5155-2908-1528
MattThePatrat 1547-5300-1581
notmman 0473-9053-9663
scosner56 5155-4114-6945
jboynton92 5370-1840-1113
celebeast 3969-3800-6792
Zorcher 5455-9423-0442
Baggerboy56 5241-2031-5094
Prottal 5300-8630-8982
Reozen 0318-7042-3723
Wiilink 4897-6167-5778
XModXGodX 2320-6139-7485
untuxable 0473-8618-9949
Apple314 4038-6893-9731
ZebraGoomba 0130-1982-9206
AnythingbutAwesome 1005-8738-0258
Patches192 4914-3333-5618
Malkanorbek 4081-5616-0591
Alison 0044-2809-9830
Knarfelyk 0146-9413-5434
GiovanniIsReal 4038-6514-0918
EDIT: all codes from thread added by Baltes June 2013