so "digg for physicists" is simplistic, in reality "Phygg is designed to help sort through physics papers and discussion topics related to arXiv.org"

I'm a theoretical physicist-

http://reddit.com/r/physics Hey physics people, check out this shirt I made! 140 votes

vs.

http://phygg.com Analytical expressions for the deprojected Sersic model 5 votes

the latter is more useful for people actually doing research.