Answers:
Perhaps a mysterious program running on your P.C.
Like a keylogger.
dont no
conceivably hack that e-mail
but must remember hack is illegal
u perchance will be arrest
If you look in deeply of site and download stuff afterwards virus's can be embed within these programs. I recommend that you strongly look at Norton :
http://www.symantec.com/index.js.
SOme sites also install spyware on your contraption.