Similar to phone tag. The act of playing tag with someone on facebook, or when chat is an epic fail.
"You go offline, then online, then offline, then back online. I feel like we're playing facebook tag
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When one of your facebook friends loads up your wall with multiple updates and other postings (similar to a brick wall getting tagged with graffeti).
"My whole page got facebook tagged with Joe's constant status updates and whatever games he has been playing. He is such a graffeti artist."
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