I've been playing a bit with the Social+Facebook source code, trying to use it on GAE.
As GAE doesn't allow for new threads, default request factory work -- it's multithreaded.
So, I've extended the ctor a bit, to take in request factory.
I've also hacked a GAE based request factory -- pretty trivial to do.

Another thing I saw is that FBOps::updateStatus could return post-id,
so we could potentially post comments to that post, via this newly recovered post-id.
Hence I've changed the FBOps a bit, but still allowing to ignore this post-id.

(The FB test was also properly modified / fixed)

The git commit is here:
* http://git.springsource.org/spring-s...dbac61864369e9

Wdyt?