Pjio.com (new free games site)

Pjio.com is still in the beta phase but it's already got quite a few games on it and it's bound to have more on it over time.  It uses a proprietary piece of software call igLoader that lets you play normal Indie PC games in a browser window, much like flash games on miniclip.  You have to download and install igLoader, but don't worry it's painless and virus-free, and if the developer get's his way, it'll soon become a major standard.

Anyway, go and checkout the free games (some are just demos, but you can still play quite a few levels) - there are some really cool ones there like Geom and Fren-ze (wicked hard but amazing).  I plan to bung some of my free games and demos on it soon, so keep an eye on it.