Twitter Twits du Jour (Jun 5) Jun 6, 2011 <1 min read My Top 3 #lastfm Artists: Abused Romance (12), Jennifer Lopez (6) & Great White (3) bit.ly/cwFLq6 # RT @gerikson: Groupon Is a Straight-Up Ponzi Scheme | Groupon IPO| Knewton Blog t.co/fcVjg9a #