It was an adult "chat" site: https://web.archive.org/web/20230101040501/https://www.chat.... (NSFW)

Though it looks like they were already trying to sell the domain: https://web.archive.org/web/20221208222423/https://www.chat....

Historically, it was owned by CNet's download.com (remember that?) and it redirected to their chat apps category.