Postgenomic.com is a new site that aggregates and analyses blogs about the life sciences, largely but not exclusively based on linking behavior.  I can't help but think of it as a topic-specific Tech.Memeorandum with more features but a smaller sphere of blogs being indexed.  It looks to be limited right now to 155 blogs in particular, though the site is asking for more blogs to include.  It's been up for less than two weeks so far.  The site also includes support for microformats for content contribution (eg. rel="review" markup in blog posts).

Memetrackers are hot right now in the Web2.0 space, and it's very interesting to see the genre in action outside the web tech industry itself.  Web tech geeks are probably the most likely people in the world to have blogs, though, so it will be interesting to see how much success can be found in other fields where the medium of blogging is still catching on.  See also ScienceBlogs.com.

Postgenomic was created by an anonymous scientist named "Stew."  Identified as a bioinformatician in his late twenties working at a large UK university, Stew says he remains anonymous so he can blog freely without fear of losing his job.

Hat tip to eHub for discovery of this.