Ninja-edit: Final Thing? No, brother, I did not type all this for nothing!
Theoretically it's possible to get into my webmail through a keylogger. I'd know if you did, though, I own my own domain, and that domain is hosted by the hosting company I work for: I have physical access to the machines on which it all runs, and root access to all logs, DNS servers and mail-servers around it (Which I only do at work, not on the home-machine). Theoretically you could cancel my 3-euro-per-month mobile phone subscription. Maybe get into my steam account, that's about 20 games you could steal from me, most of which I don't play anymore. Other than that, not much you can do with my email... Tell my friends I like to suck cock on my facebook, perhaps.
You'd be amazed how little damage you can do with just an email address
Source: I've been a professional software developer for 12+ years, work at a highly security-aware hosting provider, and have been infected only
once by the
Tequila virus, because some gaywad at computercamp in 1993 went around with a floppy putting it into everyone's computer. I don't think I won't get infected, I just make sure it's not that big of a deal if I do