Pamela Jones, of Groklaw, thinks that OSI has a problem in Open Core. I think she has it backwards. The Open Core (most notably SugarCRM) folks have a problem. They'd like to convince people that they can achieve the open source effect by having two versions of their code: an open source version, and a proprietary version. They'd like to convince people that their proprietary code is going to benefit from the open source effect. Good luck with that!