The point in favor of the GPL as brought by Jeremy, is that the xGPL will encourage contributions. I have to agree with Jeremie: with the BSD license, companies will tend to keep things back. Look at Apples OS-X. It is based on BSD, but they probably NEVER will make their code public. So what benefit does the community have from it?
Well, I am in favor of the LGPL for wine (although other licenses have their own benifits).. But I'll play the devils advocate here snd point that and Apple HAVE released the core BSD code for OS-X under their own license. It's called 'Darwin'.
It's missing all the pretty GUI bits that Apple are still keeping to themselves, but they HAVE open-sourced the kernel itself.
http://www.opensource.apple.com/projects/darwin/
- Ender