I'm a consultant on this project:
http://www.posternation.com/
...be logged into FB when you click the link and look at your results.

Really need to check what I have been liking on facebook. One of my recommendations was "Fanny's wedding day".
Interesting stuff.  Facebook do need to look at that permissions box though. Puts me off almost everything.

I think it's interesting but by the same token I'm not sure I really I want posters with things I 'like' on them, but I'm not in the market for posters so maybe that isn't fair, but it's the first time I've seen Likes used to solicit sales like this.

I'd say that same.  The Stuff I 'like' is usually either work related or things I do with the kids.  Not sure that I am ready for a poster of Peppa Pig on the lounge wall because we liked peppa pig world.

However I can see it working in some markets - and I can imagine those markets being more aligned with poster buying. Certainly my nieces and nephews seem to 'Like' a lot of music artists.  With some filtering on what type of entities triggered recommendations I could see it having potential. 

yeah, there are a few verticals we have plans for, but this is basically the technology...