Yahoo made Mark Cuban a billionaire when it paid $5 billion for Broadcast.com
This one comes from an old list by StockTwits cofounder Howard Lindzon. He jokes this acquisition is worse than AOL-Time Warner because it gave Mark Cuban the money to buy the Mavericks, and from there the spotlight to become a part of the national landscape. Putting that aside, it was a pretty silly buy during the dot com boom times.
