People want to buy bitcoins right now but are leery of the black-box that is btc-e, so they go to bitstamp.
I think btc-e is far more likely to be the next Gox.
Regardless, people should obviously never keep many coins on *any* exchange.
Keep sole control of your private keys, people!
I actually think BTC-e is safer than Bitstamp. BTC-e has been around for a long, long time and they were the only ones that were professional about the transaction malleability thing weeks back (withdrawals down for only 2 hours, whereas Bitstamp took days.) BTC-e is playing it smart though, I don't believe the owners of it want to be #1, being #1 comes with many risks... Anyway, their upcoming audit reports add legitimacy in my eyes.
The issue here is that Bitstamp can be co-opted/corrupted much more easily than BTC-e. Wall Street already manipulates the world stock markets, they can definitely coerce the publicly known, 14-man crew that runs Bitstamp to fake exchange data or what have you. I view BTC-e's anonymity as a good thing: so long as you can trust the owners, you can also trust that Wall Street will never pull any shenanigans on that exchange.
