Anyone know what's up with the search function in the forums? I click on it, nothing happens. There are subjects I'd like to search and I don't want to repeat previously discussed topics. Am I missing something?

Weird, if I click on the search function it opens a search bar for me where I can write and click on go. I'm using Firefox 39.0.

Aha! I just tried while I was in this thread and it works!!! But for me, it doesn't work (click and nothing) when you're at the main discussion menu that lists all the posts. Thanks for giving me the idea to click on it while in a thread!

With main discussion menu you mean this page: http://www.gog.com/forum/the_witcher_3_wild_hunt#1437578573 ? For me it works there too.