The title pretty much covers it. This is hardly a game changing thing, but good for a laugh. For the unaware, Shazam is a music identifying app for smartphones which works by sampling using your phone's microphone before matching and identifying the recording with its rather huge online database of songs.
How I use it:
- Just takes one tap to start the listening, can be from your pocket, and then a look, like you're checking the time. Don't need to mention the song's name straight after you check the phone
- House parties -- start discussion/lead the frame by talking about band/song -- knowing stuff that other people don't makes it quite easy
- If I'm at a girl's and they're trying to im

