Yep,
I open one at the "Internet Coffee" and make that shop becomes a messy place (Sorry, the owner now has Norton on his system !). The feature can be an email from your admin-domain which warned you that your PC may have virus and you did send an email to someone and they complain ("our customers complained your PC may have virus and infected others customers, please use the patch in attachment,,,bla bla...) I open it not at home (it is my rule, not open any attachment at home). A couple of days latter, my domain mail server has an announcement about this spam. It happens to many mail servers. Yahoo has a tool to scan all mails come to server beforehand. It's convenient.
By the way, there is a hint to go to "Internet Coffee": You better has a notepad program (any computer has this little program at START->All Programs-->Accessories-->notepad. You open it, key a lot of keys,but among them has your password string, then whenever the password box ask for password, just highlight your password in notepad and press CTRL C ( means "copy to clipboard") and go to password empty box paste the highlight into passwrod box with CTRL V (means "paste from clipboard"). Why so complicate ? Because the Internet Coffee may have the program call "Keylogger" online and they can retrieve your password by look in their log of that program. Your password becomes "Not Secret" to them. By my hint, when they look at their log-book, they only see "Ctrl-V" ,not my password.
So, it's simple by example. If my password is jwsons, I will type into notepad something like "gdh7689jwsonshrth567" You can see the string jwsons at the middle ? I highlight this "jwsons" string and press Ctrl C then Ctrl V it into password box. Done. Remeber, before leaving Internet Coffee, close Notepad and answer "No" to "Save your change in notepad ? Y/N?" And click Tools- pulldown menu on top of the Internet browser, choose "Internet Options" (usually at the bottom) and Click 2 boxes "Delete Cookies" and "Clear History." Am I too serious ? Nop, the Bethel taught me how to dealt with "sons of this world." I left Bethel with some funny "arms" like those hints
jwsons