Found your communication dynamics very valuable. I'm currently teaching two introductory college classes. Each one has half the students using blogs, the other half using wiki's. So far, I think the wiki's are more helpful for the students. But I didn't know about the aggregator application. That would certainly help me to monitor what the students are writing, and I think that it would make the experience more lattice-like for students because it would make it easier for them to monitor each other's postings