Blog by Jonathan Eisen, Prof. at UC Davis. More info at: Lab Page , Profile , or Twitter. Go to fancy "dynamic" views here .
Well, there's also the Darwin Online site which is nice because not only does it contain all of Darwin's publications, but also every edition (so one can see differences between versions and thus trace Darwin's thought over time)But, it does say "limited to non-commercial use only".
this site was dead when i posted the blog so I did not include it ... apparently itis back up