Coincidentally, I received an email from a friend, within seconds of having deleted the E-Card emails, warning of a relatively new virus, with a link to a snopes.com verifying the validity. Actually it was first reported early July, but this is the first time I have received any.
According to Mcafee Anti-Virus, the virus is W32/Zhelatin.gen!eml:
This is a generic detection of spammed email messages used to entice users into visiting sites hosting exploits that would result in a drive-by download. A user receives an email titled “You’re received a postcard” [greeting card etc] in his inbox and is requested to open the link contained in the message body in order to view the virtual postcard. On visiting the link, a cocktail of browser and application exploits that attempts a drive-by install of malware on the users machine is performed.
A copy of the spammed message is as follows:
Presence of the W32/Zhelatin.gen!eml detection is not an indication that a system has become actively infected. The from address is spoofed when sending infectious email messages and therefore, it can not be assumed that the from user address is any indication of which user may actually be infected. The following list of subject lines have been observed in the wild:
You’ve received a greeting card from a admirer!
You’ve received a greeting card from a class mate!
You’ve received a greeting card from a class-mate!
You’ve received a greeting card from a colleague!
You’ve received a greeting card from a family member!
You’ve received a greeting card from a friend!
You’ve received a greeting card from a mate!
There are many more.
Considered low risk, but it's always a pain to remove them, so better safe then sorry. Delete, delete, delete.
In my humble opinion, spammers and virus creators etc. should be drawn and quartered!