Have a look at this article:
It has some fantastic blogging resources and reasons why blogging is becoming such an important learning and self-reflection tool for 21st century learners and teachers.
1. The best way to get your feet wet without drowning is to use a group blog (a personal favourite)
2. Teach students how to write comments (all part of effective literacy practice)
3. Use what you already have in your teaching plan with some minor adjustments (don't reinvent the wheel!)
5. Communicate with parents about what you are doing.
We would love to know your thoughts on this.