Marcia DiStaso, assistant professor of PR at the College of Communications at Penn State University, surveyed 1,300 PR pros and they say 60 percent of Wikipedia entries contain errors about their clients. And because of rules against PRs editing Wikipedia articles, the errors can remain published for an indefinite amount of time.

According to information we received via email, DiStaso has been conducting Wikipedia research since 2006 and gathered responses from PR pros across agencies, nonprofit organizations, companies, and other groups. She told ABC News that PRs are only allowed to leave comments and wait for a public response. Ideally, Wikipedia guidelines say that should happen within five days. But nearly a quarter of respondents (24 percent) say they never heard back. More than half of respondents thought the rules should be changed.

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