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!
I'm running a BOF at OSCON on Wednesday night July 21st at 7PM, with the declared purpose of adopting an Open Source Definition for Open Data. Safe enough to say that the OSD has been quite successful in laying out a set of criteria for what is, and what is not, Open Source. We should adopt a definition Open Data, even if it means merely endorsing an existing one.
Will you join me there?
Greg Stein (Apache developer and all-around nice guy) made an off-hand comment about open source trademarks in an article(How to Screw Your (Open Source Software) Customers). He was talking about how many users of MySQL have actually using a purchased proprietary licensed copy of the software, and not the open source licensed copy. MySQL's business model uses dual licensing: the GPL, and for the folks whom its strictures are unacceptable, a standard proprietary license.