1 definition by zqtwho

Top Definition
When somebody else jacks your or others hashtags to promote there twitter page or product
Example of Hashjacking:
Omg check out this cool thing or a tweet full of hashtags
#NYCMarathon
#PrimarySchoolMemories
#Secondaryschoolmemories
#IveAlwaysWantedTo
by zqtwho November 06, 2011

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