Spotify has teamed up with Klout, the online social influence measuring website, to offer U.S. invites to its unlimited streaming music service that launched Thursday morning. Simply sign up for a Klout account to get started and, if you have enough influence across various social networks such as Facebook, Twitter and LinkedIn, you could qualify for immediate free access to Spotify. Spotify’s free ad-supported service is currently available by invite only in the U.S., though the paid services are open to all. Klout is also offering one month of Spotify Premium service if you get five of your friends to sign up. We’re loving Spotify so far and if you want to skip the wait without paying, Klout is definitely your best bet.