Valve’s Steam: Not just for games anymore

Valve, a big name among gamers, plans to use its Steam online distribution system to offer productivity applications as well. Developers can submit their titles to Steam Greenlight. The store goes live September 5.

Get Portal free on Steam until Sept. 20

This is a treat. Valve is offering hit first-person puzzle game Portal for free starting Friday, until Sept. 20. You can grab your copy of Portal for Mac (or PC) on Steam. If you haven’t played Portal, great. If you have, it’s worth playing again.