Someone who over hashtags their tweets on Twitter to gain more exposure.
most #underrated #britpop band, without question: #supergrass #fuckyou #thingsweneedtochange

"I have to unfollow Steve on Twitter. I am sick of his flashtaging. I can't even get through a message with only 120 characters."
by Hashtag Failer August 31, 2011
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My Mum is singing campfire hymns #Mumbyah ...I totally flashtagged that one
by GoggleboxUK May 11, 2015
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