I made the mistake of transferring some BTC to MtGox only to find that I can't get it out again without supplying them with ID, fingerprints, blood and DNA samples, and of course my firstborn's soul.

So no MtGox for new traders.  I've been looking at Campbx (https://campbx.com/main.php).  I like the feel of the site but haven't tried them yet.