Right now there isn’t a search function, and so people don’t have to repeatedly ask about it, here is your help for it!
If you would like to search the forums simply go to each individual forum, i.e. the Customize.org one, or the old one General Discussion, scroll to the bottom, and type in the search box. I’m not putting an image in here because it ought to be easy to spot. ;)
If you would like to search the submissions you’re going to have to use Google. I know scary for some, but the tool you must master. In the main help section you can find Using Google but that isn’t gonna help as much for this. This time you’re gonna need to know the trick “site:customize.org submission title, keyword, etc.” Use the first part in the Google search box, and after it type what you’re searching for.
It’s as simple as that, so now you can search things here while we are without a search box in the site.