PostGenomic

Here is a nice site : www.postgenomic.com created by Stew.
Postgenomic aggregates posts from life science blogs and then does useful and interesting things with that data.. Here you can find blogs linking to scientific papers (e.g. identified by a pubmed-id). In fact it is a kind of reverse connotea(Hi Timo !)/citeulike. Stew also suggested to use the "rel" attribute in html anchors to identify reviews...

Technorati Keywords: connotea citeulike literature paper social review pubmed ncbi blog