Two new social media campaigns are underway, on two different social networking sites. Dunkin' Donuts, a donut and coffee chain in the United States, has started its latest social media campaign, calling for entries from its fans to find the ultimate coffee fan. The chain isn't a new entrant to social media campaigns, but unlike its previous efforts, this time they're using Facebook as a platform for the contest, as opposed to their own microsite.

The contest invites users to upload videos of themselves, showing the community of Dunkin' Donuts why they're the ultimate coffee fan. Fans stand to win a grand prize of a trip to Costa Rica and 60 months' worth of free coffee.  

American Idol, on the other hand, has decided to take its auditions online, at least in part. The uber-successful TV show has invited Hollywood-hopefuls to make videos of themselves performing a song from a pre-approved list, available on MySpace. These aspiring singers can then upload these videos to MySpace, and those who get past the judges, will be called for a second round of auditions in Los Angeles.  

FOX's Glee also held casting calls on MySpace earlier this year, inviting users to audition for the show. A record 28,000 users auditioned for a chance to play a part on the hit TV show. We've previously reported on Gucci using its site to find a new model from the crowd, and VitaminWater using Facebook to crowdsource its next flavour.