From a reader:

Hey, I remember reading your post the other day about Starbucks attempts to create a mass marketing campaign on Twitter. I recently got a chance to interview and report on an activist filmmaking group that hijacked the hashtags that Starbucks was using and turned the company's own marketing campaign into a protest against it, forcing Starbucks to end its contest prematurely.

Anyway, I thought this was something you and your readers would find interesting.

Take care,
Simon