You know honestly Jim, I'd say you likely were phished. It's not always obvious... most of us were gotten right here at PRO a few weeks ago, myself included on my own site. It's easy to mistake eBay for a page that looks exactly like it. And then after you use the spoof page it'll usually take you to a page on eBay you'd see after logging in. Normally most users use their cookies to store that info, so they were actually already logged in (hence how the redirect works without you noticing anything unusual).
This is a very easy way to give up not only a password but your username. I've been had only once, here on PRO, but I almost got had on PayPal once too. Sneaky b*stard are getting good.
"Greatness is not a function of circumstance. Greatness, it turns out, is largely a matter of conscious choice, and discipline." - Jim Collins