Caretaker can better speak to everything that's been going on behind the scenes to improve the site - perhaps privately. If you want to donate specifically on that basis, it would be much appreciated. One thing that has been done, while not specifically "to" the site, is that it is being actively moderated and administrated now - which takes more time than most would think.
While one-time donations are completely appreciated, our main aim is to find regular contributors that simply want GC to continue to exist. The monthly cost to host the site is constant and substantial due to its subject matter and the level of privacy required to keep it alive.