I think a useful way to do writing assignments is blogging. I think the only useful way to do that is during class though. You can't always rely on children having the technology at home, so still peer reviewing on line will still take time in class. I think for peer review is to let the student take home anothers paper and review and have time. This way they dont blow it off they actually do it. Also reviewing papers on the computer helps as well. It shows what's misspelled incorrect grammar and so forth. Also it may make learning not so boring for students. Instead of sitting listening to a lecture, they could periodically access the program online and learn that way.