Social rejection isn't just emotionally unsettling, it can also impact your heart in a literal sense, according to a new study which finds that being romantically rejected makes your heart rate drop for a moment. 

Bregtje Gunther Moor, Eveline A. Crone, and Maurits W. van der Molen of the University of Amsterdam and Leiden University in the Netherlands say research has shown that the brain processes physical and social pain in some of the same regions but they wanted to find out how social pain affects people physically. 
In the wake of the Pepsigate scandal at Scienceblogs.com and the departure of some two dozen bloggers, a variety of companies decided to capitalize on the disarray and start their own blogging networks - PLoS started a blog network for outside contributors, as did Wired and soon Nature Publishing Group will tackle it one more time at Scientific American.

I have a few notes on home networks, which notes come from recent experience with some network setup issues.

Encryption: How to secure one’s network — or whether not to — continues to be a point of debate. I favour some of the arguments for being a “good citizen” and leaving your network open, and then making sure your computers are secure. Still, that works best if you don’t want to communicate between computers within your network, and can just wall each one off.