I've been posting teen reviews to the web for a number of years at http://www.genrefluent.com/teentalk.htm and my own reviews since 1995 at Genrefluent.com. If you really want to know what teens are talking about in relation to teen books you may want to check some of those older listings. Be sure to click on the Teen Comments Index at left of the Teen Page. Please let me know if these reviews are valuable to you. Over the years some of my teen readers have been hired by publishers and some have had their reviews published in The Ultimate Teen Book Guide edited by Daniel Hahn & Leonie Flynn and published by Walker & Company.
I've switched to this blog since I couldn't figure out RSS for my legacy web site (est. 1995).