When "legal rape" blogger Daryush Valizadeh (also known as Roosh V) invited devoted readers to an international meetup day, the announcement wasn't exactly met with open arms. Actually, in one instance, it was met with boxing gloves. But the threat of physical pain wasn't the only thing that scared the group into cancelling its event.

Valizadeh told members, known as "tribesmen," to be careful after the meetup announcement caught the eyes of hacktivist group Anonymous.

>> Click the gallery above to see some of the worst things Return of Kings has said.

For years, Return of Kings has been called the "worst blog on the Internet" and a "vile troll site." They were even dubbed misogynistic "garbage" by the Ottawa mayor on Wednesday. With its fat shaming, racist commentary and degrading write-ups about women, the site's aggressive reputation preceded its meet-up announcement, prompting the hashtag #TurnAwayReturnofKings.

"Heads up to all forum members: change your emails immediately," Valizadeh tweeted to his nearly 19,000 Twitter followers on Wednesday. "Hacking group that works for media is incoming." The tweet has since been deleted.

Apparently, it takes more than a few email changes to protect someone from an elite group of hackers. The group posted the address of Valizadeh's family to Facebook, along with other exposing information.

"Anonymous doxxed by family's address. Whatever I've done in life, they don't deserve to be harassed or harmed," he tweeted.

Followers of the site were scheduled to meet 8 p.m. Saturday in more than 150 cities including Austin, Dallas, Denton, El Paso, Houston, Nederland and San Antonio. The Houston meetup was set to be near the arch of the Sam Houston Monument.