You rate a concert by sending a text message to 30 13 98 55 with text: [1-6] [your comment].
During the concert and with in 20 min. after you will be able to rate it.
After the concert, you can see the average rate, comments and a graph of the concert on this site.
Back home, you can get the concert graphs as widgets on your Myspace at Roskilderates.dk.
www.roskilderates.dk