[Cornify]

I had basically the same experience updating cornify.com to the new social plug-ins. Documentation is incomplete, the Facepile doesn't work at all, and using an older Facebook Connect library at the same time breaks everything.

This has been my experience for a long time now. Even when talking to big clients at work, we're simply not encouraging integration with the Facebook APIs since we can't be sure what's going to happen.

Another thing that is a big downer is that the plug-ins can't be skinned. This may be good to keep the brand visible and establish a minimum level of design quality, but for agencies it doesn't work since it's impossible to create something dead-sexy.