Fort Worth, Texas (CNN) - An internet troll reviled for his pornographic posts on Reddit and recently revealed as a middle-aged software programmer told CNN that he made "a huge mistake."

For years, 49-year-old Michael Brutsch hid behind the online screen name "Violentacrez," creating hundreds of subforums on the user-generated website, such as "Rapebait," "Incest," "Pics of Dead Kids," "Choke a Bitch," and "Rape Jokes." "Violentacrez" has been banned from the site several times, although Brutsch still maintains a separate account.

Last week, Gawker revealed the identity of "Violentacrez," whose posts generated as many as 800,000 subscribers and triggered a debate about whether Reddit was criminally liable for the content of its forums. Reddit is a website where the popularity of posts - and whether they are featured prominently on the site's main page - is determined by registered users' votes.

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