"I don't understand how someone gives Madoff all of their money to manage for them. When someone has very little to lose, I totally get betting it all and going for it. But when you have accumulated a nest egg or more, you must be diversified in your investments and assets. You cannot put all of your eggs in one basket." - Fred Wilson
Loved this post by Fred Wilson explaining the merits of Diversification, mostly because on the subject, I've been a broken record to friends and family for a long time. Diversification is your friend, a very, very good friend.