Blogs, in general, have the potential to increase reflection, sense of community, and collaboration in undergraduate classrooms.
Resource: http://scholar.google.com.pr/scholar?q=Blog+effectiveness+in+education&hl=en&as_sdt=0&as_vis=1&oi=scholart&sa=X&ei=lgcEUaiPKITY9QSKtoHoDA&ved=0CCkQgQMwAA