We blogged about Facebook’s Open API over at #comments as a guest blogger. It seems everyone wants in on the social networking openness. Tomorrow, Google is slated to release it’s OpenSocial.

Oracle and Salesforce.com are also jumping on the bandwagon with Open Social support, along with Linkedin, Plaxo, hi5, and Friendster. Does anyone still use friendster?

The exciting thing for developers, and ultimately the user community who may use such apps is that developing for Google’s new API will easier, and will work across a lot of differen social networks. Granted Facebook has a huge inertia behind it, but still build-for-one and deploy-across-many is a powerful motivator for everyone.

And if my experience with Friendster, then Tribe, then MySpace, and then Facebook is any indication, people will get excited about the next great community, social networking site and forget about Facebook just like they did every single one before.

NOTE: As of Thursday, you’ll be able to go to Google’s homepage for the project: OpenSocial