In light of facebook's acquisition of fb.com from the American Farm Bureau Federation for $8.5 Million (http://mashable.com/2011/01/12/facebook-paid-8-5-million-to-acquire-fb-com/),
do you think it's advisable, then, for startups to plan to acquire their two-letter equivalents early on at a relatively lower price? For that matter, how many domain names should a startup buy, and what rule of thumb should startups follow when selecting/buying them?
Off-topic, do you think that $8.5 million was a wise use of FB's investment?