The question, really, is what you get out of it. Again, I don't like the MIT license because it allows for license changes without actual code changes.
But the question is what you get from proprietary spinoffs. If you are afraid that proprietary firms will drive away the more free software products, then the GPL seems best. On the other hand if you accept that the community will eventually prevail, then you get to see where folks think the market is, and where the community version should go to be more successful.
I wonder how Green Plum is going to deal with a BSD-licensed competitor being Postgres-XC....
But the question is what you get from proprietary spinoffs. If you are afraid that proprietary firms will drive away the more free software products, then the GPL seems best. On the other hand if you accept that the community will eventually prevail, then you get to see where folks think the market is, and where the community version should go to be more successful.
I wonder how Green Plum is going to deal with a BSD-licensed competitor being Postgres-XC....