Facebook’s apps are back in headlines following Friday’s announcement of a new JavaScript client library that will allow their applications to be displayed on any Web site – the company’s latest move to stay on par with Google’s OpenSocial.

With the new client library, users will be able to integrate social networking apps into blogs, personal home pages and other Web sites. This means that while visiting your buddy’s home page, you can throw snowballs at, vampire bite, take sexy back from or otherwise interact with your Facebook buddies.

While Facebook has already released an API for writing applications, and while some developers have already created multi-site applications, the release of this JavaScript library makes it incredibly easy for anyone to embed these applications on a number of sites.

Wei Zhu from Facebook writes:

Since the library does not require any server-side code on your server, you can now create a Facebook application that can be hosted on any web site that serves static HTML. An application that uses this client library should be registered as an iframe type. This applies to either iframe Facebook apps that users access through the Facebook web site or apps that users access directly on the app’s own web sites. Almost all Facebook APIs are supported.

For more information about the library, check out: http://developers.facebook.com/news.php?blog=1&story=73