keyplyr - 1:50 am on Jan 8, 2012 (gmt 0)
After much speculation about these bots, what they're doing with my content, etc... I opened a FB account, put 2 different types of pages (personal and a "small business") and did some testing.
I only see my images & page thumbnails when linked to my sites either by me, someone reposting my post (status) or another FB user talking about my sites. All this is fine with me.
There is an app developer program (similar to Google) that I block on a case-by-case basis, but so far I have blocked all.