SuperGlued has a free iPhone app with all the CMJ music show listings and more that lets you see Tweets about each show, Tweet out your own messages, and share pictures you take via the app. The launch was geared to SXSW, but it works anywhere. The app pulls in show listings from Last.fm, Livenation, local show listings, and those added by members. The app lets you indicate that you are going to a particular show. It also lets you gawk at other people at shows, by snapping pictures and sharing them through the app, or checking out Tweets about that show. It acts as a Twitter client as well, letting you Tweet to your friends whether or not a show is worth coming out to, or just to show your appreciation for a particularly rocking song.