Here's a new way to tell all your Facebook friends (and acquaintances) what you were rocking out to Friday night. Amsterdam Worldwide and Olmeca Tequila present 'NightTag,' a social music app that captures your picture of your party, along with the music you were listening to, and the place you were, and posts it on your Timeline.
A Listings page on the app will highlight "top dance nights" in select countries, while a Streaming page lets you discover music and share it. NightTags also appear in the Ticker feed. The Streaming page also hosts electronic music channels and podcasts.