Former staff at Jelsoft (vBulletin) appear to have been working on a new project (yeah!) which has won the ire of Internet Brands (boo!):
Internet Brands today has commenced a lawsuit in the courts of England and Wales against Xenforo, and its founders, Kier, Mike and Ashley. The lawsuit is about these claims: infringement of our copyrighted intellectual property, breach of contract, and unfair business practices.
The suit is simple: we claim that Kier, Mike, and Ashley have infringed and violated contracts they signed with us to gain unfair business advantage. As such, Xenforo’s software unfairly stands on the shoulders of more than a decade of development by Jelsoft. Internet Brands owns this intellectual property.