I think that collaboration among educators is wonderful! I really value different viewpoints and the advice of my colleagues. I see two ways that online communities can be helpful.
1. Online communities allow people to share without having to schedule meetings.
2. Readers can take or leave the ideas that are presented in the blog they are reading.
Music teachers in our district already have a folder on the district server in which we share power points, mp3s, listening maps, and ideas for teaching the curriculum. I have enjoyed the ease with which we can share.
When reading the commenting advice I was most affected by the idea that you should add something meaningful with a comment. Leaving a one word comment like, "Great!" might be nice and good etiquette, but it doesn't make the blog better.
I found commenting on blogs took up A LOT of time. I had a difficult time finding blogs to comment on because I had to read quite a few to find blogs that I could identify with or had an opinion about. I commented on the following blogs:
1. 2 Cents Worth
2. Websites of the Day for ELL, ESL, and EFL
3. Southbound 45
4. Mary's Art Spot
5. Mrs. Dixon's Blog
These were all good blogs. In the future I will be on the lookout for websites, apps, and blogs having to do with teaching music. Suggestions are welcome!