Letting it run out
A couple of years ago I applied and was granted membership into the GNOME Foundation. At the time, I was helping out with GNOME Journal and running GNOME Miro Community.
Since then, GNOME Miro Community fizzled out and stopped because it didn't find a compelling reason to exist (wasn't interesting for marketing, didn't do a good job of indexing conference video, ...). GNOME Journal fizzled too and I stopped working on it.
Also, in September, I left PCF where I was working on Miro which uses a lot of GNOME technologies.
Given that, I decided not to renew my membership. I'm a little bummed, but I'm not doing anything. I do wish them well. I will miss the periodic anti-FSF fireworks.