ergophobe - 9:30 pm on Oct 1, 2010 (gmt 0)
I don't know the exact ins and outs of the licenses, but my understanding is that MPL is between LGPL and BSD, but closer to LGPL, but that may well be wrong. My very poor understanding is that on a scale that moves from "copyleft" to "copyright" the order would be GPL -> LGPL, -> MPL -> BSD
They're all open source, but GPL is "strong copyleft", LGPL and MPL are "weak copyleft" and BSD is "copyright"
Incidentally, I have no sympathy for the Wordpress proprietary theme developers. They knew it was a grey area at best. In the particular case that flap was about they were using GPLed code from Wordpress itself in their themes.
Ha! Let's not go there! My opinion is too well-known (one has a legal obligation to respect whatever license is in force, like it or not) and I wasted too much time in the thread devoted to that topic [webmasterworld.com].
One minor point though that is germane to the current discussion (choosing an open source .NET CMS- the whole flap erupted before anyone realized that Thesis had copied hundreds of lines of code and was on the more abstract issue of extensions that interface with a GPL program - something people evaluating developing for an OS platform would do well to understand.