I teach pre-service teachers at Fresno State and I encourage them to develop their PLN on Twitter. A few of them requested Tweeps to follow that are subject specific.
A Twitter Win
This list by itself is a Twitter win. I had filled in a few Twitter handles and set the Google Spreadsheet to anyone can edit. You will notice how the list has exploded, truly crowdsourced. Some folks added additional columns and someone made the header look spiffy.
Do you know educators who are a good follow on Twitter? Tweeps who share resources, tweet about education and are willing to help other educators. Add to the list. Go to http://goo.gl/pA6Pa1 and type in a Twitter handle.