I am not and have never professed to be a techie, but the following really caught my attention. I do work online and this scares the heck out of me.
According to word on the internet, a new virus which will be spread via email with the words "POSTCARD" or "INVITATION" in the title. According to what I read, this virus potentially will burn your C drive.
I went to snopes.com and it is discussed there as a real virus. Most importantly, the email will be from someone you know enhancing the odds that you will open it.
If anyone has further info, please comment. My understanding is that this virus has just been detected and there is no cure yet.