For you Milsurper's out there (like me):
<Discussion Boards>
http://www.gunsandbullets.com
http://www.surplusrifles.com
http://www.gunboards.com/forums
http://www.ar15.com
http://www.warrifles.com
http://www.odcmp.com
http://www.battlerifles.com
http://www.sksboards.com
http://www.falfiles.com
http://www.servicerifles.com
Go to http://www.ezboard.com and search for rifles, firearms etc. There are specific forums for Swiss rifles, Mausers, and the world famouse Parallax Bill's, but you need to register with ezboard to access some of them. Free, but registration is necessary.
<Importers/Distributors - Especially if you have a C&R like I do>
http://www.centuryarms.com
http://www.aimsurplus.com
http://www.southernohiogun.com
http://www.empirearms.com
http://www.allans-armory.com/aa.asp
http://www.coledistributing.com
http://www.jgsales.com
http://www.classicarms.us
http://www.interordnance.com
http://www.keystonearms.com
<Ammo>
http://www.cheaperthandirt.com
http://www.ammoman.com
http://www.aimsurplus.com
http://www.ammunitionstore.com
http://www.sportsmansguide.com
http://www.cabelas.com
http://www.natchezss.com
<General Information>
http://www.makarov.com
http://www.mosinnagent.com
http://www.7.62x54r.net
http://www.yooperj.com
As you can see, nearly my entier interest is milsurp rifles, especially Curio and Relics.
I usually go by the name Shek870 on the discussion groups, so stop by, say Hi!
I have probably 50-75 more links in addition to these. If you want more, speak up.