Social network site Facebook has joined the OpenID foundation, the service that provides a single user ID across the internet.
Luke Shepard, a member of Facebook's Platform and Connect teams has joined the OpenID sustaining board. Other corporate members include Google, IBM, Microsoft, PayPal, VeriSign and Yahoo.
As the OpenID community entered 2009 two key topics were the focal points on the road to mainstream adoption: user experience and security.
Facebook said it would run a design summit next week at in Palo Alto which follows a similar summit on user experience hosted by Yahoo last year. The summit is expected to include designers from Facebook, the DiSo,, a project to make social networking more distributed, Google, JanRain, MySpace, Six Apart, and Yahoo.