Technical sites
I typically start office time with browsing my office mails followed by gmail  and live mails . This is now invariably followed by 30 mins of browsing technical sites and I have kind of grown addictive to these:   Regularly visit:      http://news.cnet.com      http://digg.com/technology      http://techcrunch.com     Few other sites I visit occasionally:      http://techmeme.com     http://mashable.com/      Few more which I rarely visit:      http://www.techradar.com/     http://engadget.com      http://slashdot.com      http://thenextweb.com/     http://www.readwriteweb.com/    Trying to avoid mention of FaceBook , Orkut  and Twitter  where I spend considerable time too :)