My general attitude has been to let students do whatever they'd like with their pages - they can add photos, music and even additional off-topic postings as long as make seperate and clear entries for their course work. In 90% of cases, this has worked great!
However, since students are required to view each other's blogs, I get worried about the few sites with vulgar content (i.e one students title banner features Tupac giving the viewer not one but two middle fingers! Another has girls - facing away from the viewer - taking off their shirts to flash a highway; another has some off-color rap song playing. Personally, I don't care enough to want to dictate the terms of students' blog designs, esepecially since its only a few. However, I fear that others will be upset.
Should I lay down the law or celebrate first amendment rights? Since students are free to chose the people on whose blogs they read and comment, am I ok vis a vis "comfort level"/ sexual harrassment etc.?