Pew Research Center

In the conservative group, 62 percent of the mentions, replies and follows involved people from the same group. For liberals, it was 35 percent. Only 3 percent of connections crossed the virtual aisle.

“It reminds me of high school politics — we don’t talk with you, we don’t listen to you, but we definitely talk about you,” wrote Itai Himelboim, a telecommunications professor at the University of Georgia, who co-authored the report.

That means that if you end a tweet with the hashtag #tcot (top conservatives on Twitter) or #OWS (Occupy Wall Street), most people who see it will already agree with you.

Each group, according to the study, relied on its own news sources and influential pundits to rally around and pretty much ignored everything from the other side.