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Someone that usually puts up pics or status updates on facebook and never get as many likes or comments that they think they deserve. So the next best thing is to tag your friend in the comments (hoping that the friend will be forced to comment or at the very least, a friend of the "tagged" friend, might make a comment)
The lonely facebooker posts:

pic of big garbage bag

Hey (tagged friend) I just got this out of your car.....
by Fiddle de de May 09, 2014
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