I've been using delicious bookmaking for several years. Several history teachers in our district use/add to my delicious bookmarks http://delicious.com/paleckson. We have 2,199 bookmarks. Delicious has been very helpful for our teachers. Most recently I started on Twitter and immediately realized the strong impact it can have on teachers. There are so many people sharing outstanding ideas and resources. Of course Twitter quickly leads one to the blogs of some great educators. I've listed a few excellent blogs and one or two websites. Please let me know about other outstanding social studies blogs that I have failed to include here. These social studies bloggers are a great place to start developing your Professional Learning Network (PLN). Another way to learn about PLN oppurtunites is to view Jennifer Carrier Dorman's slideshare. http://bit.ly/1458rK
Social Studies Central- Tons of resources for social studies teachers
Freetech4teachers - technology ideas galore!
Copy/Paste : Dedicated to Relinquishing Responsibility for Learning to the Students
Psychology Teachers Blog
Speaking of History- Langhorst has many podcasts, and other technology tools!
History is Elementary- Great site for elementary teachers.
Blogush- great site of an 8th grade U.S. History Teacher.
World History Teachers Bloghttp://worldhistoryeducatorsblog.blogspot.com
U.S. Government Teachers Blog - good stuff on government herehttp://usgovteducatorsblog....
HistoryTeacher.net - Excellent site for AP U.S. History and Europoean AP teachers - it has lots of quizzes and DBQs