Perez promotes Sony’s The Ugly Truth on Twitter

This morning Perez Hilton launched the first major Twitterer’s ad campaign, for Sony Picture’s romantic comedy “The Ugly Truth.” As far as we know, Perez’s blast marks the first time a Twitter personality has leveraged his or her influence on behalf of an advertiser.

Readers will tweet their best dating advice to @uglytruthmovie. Their tweets will be featured on PerezHilton.com, where readers will rate the dating tips. The top 10 tips will be featured on the site this Friday. Perez is doing sponsored tweets (clearly marked) to promote the contest.

Perez began tweeting in early January 2009 and is currently the 20th most-followed Twitterer, with 1.2 million followers. Perez is the fourth most retweeted person on Twitter.