According to a fascinating survey by the Pew Internet Project, 9 percent of those who frequent social networking sites have blocked, unfriended or hidden someone because they posed something about politics or issues that the user disagreed with or found offensive.

Eight percent have blocked, unfriended or hidden someone because they argued about politics with someone the user knows.

Another 10 percent of those on such sites as Twitter and Facebook have blocked, unfriended or hidden someone because they post too frequently on politics.

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