[cmurdock]

I had a brief experience with using Facebook's API last year. It was absolutely horrible. Documentation in the Wiki of features that no longer existed. Features that would just break with little or no explanation. Maybe it's improved since then but I would never try and use it again unless I absolutely had to.

[kalleboo]

What other APIs do you use? Because I find I have far more issues with the Twitter API (downtime, poor documentation, lacking features, etc)