Now we know that people who tweet about the same things constantly, or retweet without any original thoughts, don't just suck — they might also be trying to spread biased information on Twitter. Georgia Tech computer scientists identified four common behaviors of the worst "hyperadvocates" — not necessarily those pushing the most extreme views, but the ones repeating the same messages OVER AND OVER.

"We rely on things like Twitter to filter down the increasing amount of information out there,” Associate Professor Nick Feamster, who directed the Twitter-propaganda study, told me. "If we don’t configure the filter in the right way, or follow the wrong people, we can potentially get some pretty bogus information."

According to the researchers, hyperadvocates on Twitter typically do the following: