As a teacher who tried blogs in the classroom for the first time this fall - go with the easiest to set up. With everything else to do when moving into something new it's less intimidating if the technology is as easy as possible. They (we) can always move to a better product when we discover the limitations of the easier one. I'd also be interested in hearing how to motivate the students to use them - I assumed that since the net was their gathering they'd be happy to use it, but I got complaints about having to respond to others commments, etc. I started using it as a place to discuss novel questions, hoping that they might find it better than paper and pen - for some it was, others - I'm not so sure. I'll definitely give it another go next and year. Due to upgrading and moving rooms around, computers were at a premium this term.