So I fell for a spam scam, kind of.
Listen, tell you what: if you have a PayPal account? and you get a -very- authentic looking email that looks almost exactly like the real deal? telling you your account (email address intact and reposted) has been charged for something like oh an iPod to someone whose address is listed, via eSales? and you click on the "dispute this transaction" and it takes you to a site that looks just about exactly like the -real- PayPal page? asking you to reconfirm your information?
...yeah. Well, one, if you keep trying to fill out the automatic form and yer browser keeps going, "Computer says no," take that as a sign, and stop trying.
two, if the email went to your junk box, that was also a sign, yes, your first instinct was correct.
three, you may want to take a few deep breaths or at least wait for the maddeningly slow PayPal phone help center to pick up before calling to cancel your credit card.
no real harm done.