Hey...I have to agree with reactorr there...it is all about the viral with the social sites
My recent post Google Helps Us Celebrate The World Cup At Work

Hey there - great post. I have been using social media to get keyword ideas for a while now. There are a number of ways of finding keyword in places you wouldn't always think of - YouTube, Googles Wonder Wheel, Constellations, Twitter search...a bloke on the street....use your imagination