http://topsy.com/
http://tweetmeme.com/category/technology-gadgets
http://www.feeltiptop.com/
http://excla.im/
http://www.lazyfeed.com/
http://www.icerocket.com/
http://www.samepoint.com/
http://www.sency.com/
http://bingtweets.com/
http://www.smartwikisearch.com/