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2.
Someone on on twitter who over uses the "hashtag" (#)
Joe's Tweet-My #friends and #I just got #home from the #baseball #game

Sam's Tweet- @Joe your a #hahstagwhore

Everyone hates a hashtag whore
by Dub O July 24, 2011
 
1.
On Twitter, a Hash Tag (#) Whore is a Twitter user who places a hash tag in front of nearly every word in their tweets in an attempt to get as much attention as possible
One Girl to Another: Check out the Tweet from Zoe!

Tweet: goin 2 tha #club 2nite #getwild #getcrazy imma wearin my #sessy #dress from #forever21

Another: What a Hash Tag Whore!

Girl: She totally needs to lay off the hash tags
by sarasplayroom.com June 24, 2010