GameBoomers has a forum, news, reviews, walkthroughs, and articles.
The Journeyman Project Trilogy is an archive of material from Presto Studios.
Kickstarter not specifically games but used for funding some promising games.
metzomagic.com is a game website which has a lot of material from the old Quandary.
Mystery Manor has a forum, news, reviews, walkthroughs, and articles.
Pagoda game database is my database of Adventure game related links.