ChickenHero: Hmm i guess i am a bit paranoid, i never open any mails in case of this sort of thing, it was because i heard about the ILOVEYOU virus, apparently it infects your computer even if you don't open the actual mail :P
Somebody misinformed you, lol - the ILOVEYOU virus comes in an attachment that you have to open in order to get it.
That being said, if you use a program such as Outlook that downloads all your emails onto your computer, it's possible that that would be enough to give the virus contained in the attachment a foothold... I don't use or know much about this kind of program, so I couldn't tell you for certain. I do know that these programs contain scanning software that checks emails for viruses before downloading them, although that can never be 100% certain to catch something. Still, I wouldn't be worried about posting your email somewhere like this. If a suspicious website asks you to enter your email, on the other hand, I generally wouldn't do it.
With webmail, wherein you access your email through an internet browser such as Firefox, Chrome, or Internet Explorer (as opposed to programs like Outlook or Thuderbird), any email you receive sits on a server belonging to your email provider (Msn, Yahoo, Google, Comcast, Verizon, etc.). If anyone could possibly get a virus just because you received an email, it's them. That being said, you can also view that email safely. The only time webmail can possibly endanger your computer is if you click on a link in the email or open an attachment.
I hope that helps. The internet can definitely be a dangerous place for your computer, but with the right knowledge you can avoid the dangerous parts and still fully enjoy the safe parts.