To post many photos on Instagram at a time.
Sheila is instaspamming me, when I signed in on Instagram saw only her face...50 times.
by BrookeDania5 October 2, 2012
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The posting of large numbers of instagram photos one after the other and clogging up the feed
Ralph: Man that dude Mark has just posted 16 photos of his cat.

Lauren: Damn I hate instaspam
by DrBob57 January 20, 2013
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