I've attempted to get this working but have been so far unsuccessful and I think i'll give up for now. the library compiled cleanly for me in scratchbox, but I was unable to get pidgin to come up in xephyr to test it.

I was unable to get pidgin on my n800 to see the library when I put in my /usr/lib/purple-2 directory. If anyone else wants to try i've put the .so here http://www.dpo.uab.edu/~rcloud/libfacebook.so

I hope one of you has better luck than me.