Nice! It would be cool if the recommendations gave a hint of why it was recommended (e.g. "We recommended this because X liked Y on Facebook, or pinned Z on pinterest")
Great site - unfortunately I'm based in the UK and a number of the recommendations only exist on Amazon.com; not .co.uk. If you could make this international that would be great - though I suspect that's lower on your priority list than it is on my wishlist.
When searching for friends by name, if I have a friend called Jonathan Smith and I type Jon Smith the filter stops the moment I hit space. It would be good to put wildcards around spaces, or build a dictionary of synonym names (not sure what the proper word for that is).
some recommendations are spot on, but some are a bit wierd [recommending annual Maxim's subscription for my wife - this I consider wierd... :-)]
Check for the possible bug - when I was paging down and the adtl data was being fetched from the server the page kind of flashed, i.e. the scrolling was not smooth [Ubuntu, FF].
Man, I can't access this as work, but this sounds exactly like what I've been working on in my free time. Props to you if it's anything like I'm envisioning.
Now that I'm home and have checked it out, I'm glad to see that our ideas do differ in some ways. I do like how simple & easy to use your app is though!