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Activists march down Wall Street holding a cutout of JP Morgan CEO Jamie Dimon, during a protest against budget cuts and bank practices, in New York, May 12, 2011. Now, the FBI is launching a preliminary investigation in the company for possible criminal activity. - 

J.P. Morgan, the financial services division of banking giant J.P. Morgan Chase, cancelled a live Twitter Q&A it had scheduled for Thursday, after Twitter users flooded the company's hashtag with questions it didn't really want to answer. Here's the initial tweet:

Perhaps not surprisingly, the marketing stunt backfired and the trolls and sometime-comedians on Twitter took over:

Follow Ethan Lindsey at @ethanlindseyMMR