I've never been tricked with e-mails or anything, but just a week or two ago my account was jacked and someone tried selling a bunch of xbawkz hueg TV's (like 50' Plasma's). I changed all my account info...but yeah, it was scary. I am clueless as to how they got in (Spyware? I'm on a mac)
Still, scary to think about it. But eBay is pretty good at catching them, and pretty fast too.