RoleplayingTips.com Johnn Four's weekly newsletter is a wealth of information and inspiration. Also recommended: About.com's Roleplaying site.

RPG Gateway Lots of links to game accessories, rpg online games, game aids (character sheets, modules for download, etc), convention listings, game reviews, and more.

Rondak's Portal A great utility site for your live or online roleplaying games. Contains generators, links, MUDs, sounds and images -- lots of great stuff!

D&D Product list A complete listing of D&D/AD&D materials published by TSR. Check to see what your collection is missing!

ADnD.com -- a large Advanced Dungeons and Dragons site.

Osseum Entertainment provides small and start-up entertainment and publishing companies the sales, marketing and distribution support they need to create a strong infrastructure for long-term business growth.

OPENrpg.org Fun site for free exchange of RPG-related stuff.

John Kim's Roleplaying site. A big RPG resource, highly recommended.

Dimension Game Software. Generators and custom gaming software!