My new favorite thing is Pinterest. I think I missed the boat when Pinterest was really popular, but I have had the best time creating a virtual bulletin board of ideas people share. You can make a board for almost anything, but as a teacher, I'm finding it very helpful for coming up with new ideas for school. I've taught fourth grade for awhile, so it's nice to get some new ideas to use in the classroom, especially when you feel as if you have used all of your fun ideas, or maybe even just to try something new.
Here's a snapshot (thanks to Jing) of some of my school board. I have 80 pins on there just for school alone.
My friend made a Pinterest account and she has even made separate boards for the subject areas she teaches so it is very organized.
I don't know that Pinterest would be a good distance education tool- other than possibly making a "Me Board" to get to know one another at the beginning of a class, like we do in class with "Me Bags" where the students decorate a bag and then fill it with things that are important to them and then we share them in class.
However, as an educator, I think Pinterest could be a valuable tool to refresh our teaching when we need some inspiration.