A group of science teachers on Twitter have created #SciDo. In its current form, it's a shared Google Docs folder where science teachers upload lessons to share with others. Mike Ritzius has been the primary force here but I don't know the history behind it. It's like BetterLesson but with actual lessons in it.
There's a Flickr group for science pics. It looks like they're also forming a student blogging network. There's also talk of setting up mentoring programs for new teachers on Twitter and creating a video tutorial library. Sounds cool and definitely the more the merrier.
If you're interested, go to http://scido.wikispaces.com/ to request GDoc access.
EngDo has also sprung up for the English teachers. My GDoc folder shows something called MathDo as well but it's currently empty. If I find out the status of that I'll update this post. I'm interested in seeing how this evolves.
Aside: I have often lamented the fact that many science teacher bloggers are actually covert edtech bloggers. They don't blog about science teaching. Every post is "101 ways to use WallWisher" and how PollAnywhere revolutionized their lectures. It's not my bag of chips so I rarely follow those blogs or the developments in the world of SMS response systems. And yes, I'm fully aware that I'm a science teacher and I have never actually blogged a science lesson.
However, SciDo was started by a group of teachers so I'm totally supportive of that.