via venturebeat.com
Either someone just got paid off for being a real litigious nuisance with otherwise baseless claims (unlikely) or Zuckerberg really kind of was over a barrel with respect to his previous business partners (likely).
Perhaps this also settles the age old question of how much an idea is worth vs. execution. At $65 million, and assuming Facebook has a valuation of at least $2 billion (very conservative estimate), that would put the idea at around 3.25%.
EDIT: My roommate Alex reports "Actually the gloating is worth 65 MM... there was literal IM text from Zuckerberg to others bragging about how he ripped the idea and did the execution better and how stupid these twins were, etc."