Experts question Microsoft's anti-spam patents.
Just a week after Microsoft chairman and chief software architect Bill Gates unveiled his company's plan for securing e-mail communications, leading e-mail authorities, legal experts, and at least one ISP, are expressing concerns about the e-mail sender authentication plan, known as Caller ID.
Some experts agree that the technology is promising. However, Microsoft's claim that it owns patents around Caller ID, and its decision to license the technology to third parties rather than submit it to an Internet standards body, have riled e-mail experts and domain owners. Some of them said they worry about a power grab by the company and are wary of signing on to the new system.
http://www.techworld.com/news/index.cfm?fuseaction=displaynews&NewsID=1150

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic