Interesting tech reading

So lately at work I haven't had much to do. What are some good tech sites you guys like read articles at? I've looked around but haven't found a whole lot.
I enjoy www.flipcode.com
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http://www.slashdot.org
Just read an article on NASAs DTN protocol suite that I found out on engadget. Pretty interesting stuff. Here's a link from NASA itself if anyone else is curious.

http://www.nasa.gov/mission_pages/station/research/experiments/DTN.html
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