Valve has stopped with the teasing and has officially announced that its online gaming service Steam is coming to the Mac. As a bonus, the company also plans to make the Mac a "tier-1" platform, promising simultaneous release of games on Mac OS X, Windows, and Xbox 360.

Valve has developed a Mac-native version of its Source engine, using the cross-platform OpenGL. "We looked at a variety of methods to get our games onto the Mac and in the end decided to go with native versions rather than emulation," John Cook, Director of Steam Development, said in a statement. "The inclusion of WebKit into Steam, and of OpenGL into Source gives us a lot of flexibility in how we move these technologies forward."

The US Treasury Department today relaxed export regulations against Iran, Sudan, and Cuba, allowing US companies to provide instant messaging, e-mail, and social networking services to those countries. The goal is to ensure that citizens can "exercise their most basic rights," said Deputy Treasury Secretary Neal Wolin.

The new policy provides a general license to tech companies. According to the official rule, they can now export "services incident to the exchange of personal communications over the Internet, such as instant messaging, chat and e-mail, social networking, sharing of photos and movies, Web browsing, and blogging, provided that such services are publicly available at no cost to the user."