Are you interested in keeping yourself up-to-date on Product Management and Scrum?
There are some guys tweeting some nice things.
Here is my list of them.
http://www.twitter.com/MindtheProduct
http://www.twitter.com/@ProductHunt
http://www.twitter.com/@scrumology
http://www.twitter.com/@leadingagile
http://www.twitter.com/@lissijean
http://www.twitter.com/@ScrumAlliance
http://www.twitter.com/@Scrumdotorg
http://www.twitter.com/@TheStartupTimes
http://www.twitter.com/@VentureBeat
http://www.twitter.com/@ProPad
http://www.twitter.com/@abuzitos
http://www.twitter.com/@sjohnson717
http://www.twitter.com/@jefflash
http://www.twitter.com/@ProductTank
http://www.twitter.com/@AgileAlliance
http://www.twitter.com/@simplybastow
http://www.twitter.com/@ericries
http://www.twitter.com/@evankimbrell
http://www.twitter.com/@colemercer