I have been using Google Docs to blog with students as they are typing their literary analyses on the computer. In addition, some students were absent or needed a bit of extra time, so they could "talk" to me anytime, and I could answer at my convenience. It worked out well. I made sure to include it as a grade. Each student had to blog once-a comment or question. It was fun but a bit chaotic to keep up with. I don't care. It was fun and they were engaged. I could look at their papers (after they sent me a comment first) and then get on some of them about not finishing their papers online. I pointed out some errors and was sure to compliment.
I plan to have a Weebly so we can blog. The trick is getting students to blog about it and have them truly lead it. Some ideas include me modeling posing a question first, and next I'll pick someone to pose a question that everyone has to answer. I'll do this for a grade. I need to work this out first. One can find information on how other teachers did it online.