Define...virus

http://securityresponse.symantec.com/avcenter/venc/data/w32.friendgreet.worm.html

Has anybody seen this?

Technically, i wouldn't call it a virus, but then again, if i was
symantec, i, too, would bow down to custemer Demand and have my
anti-virus software consider as such (and execute it with extreme
prejudice!)

Brings up the old topic, What is a Virus? Where is that Line drawn?
Especially with crap like FriendGreeting.com.