As though I needed yet another reason to not buy a Windows mobile phone, or an Xbox, the folks in Redmond have provided one. Microsoft's Windows Phone Marketplace has banned apps licensed under the GPLv3, Affero GPLv3, and LGPLv3. And "any equivalents", whatever that means.
Note that not all open source licenses are banned. Case in point, the ever popular GPL version 2 is not explicitly banned. OK, so far so good. But is it banned as an "equivalent"? I am not a lawyer. I am also not a WinPhone user. And I expect both conditions to continue for quite a while, possibly forever.