It looks like it's been a little while since anyone's posted in this thread, but I think the intentions to improve CHDK and the forum are still here, so I'll give some of my thoughts.
1. This is a pretty minor thing, but some of the Forum titles are excessively long. In particular, I'm talking about "Hello, I'm a NEWBIE - HELP!! (Newbies assistance, User Guides and thank you notes)" which could be shortened to, say, "Newbie assistance." Or even "New user help" (since I don't really like the word newb or n00b, but that's a different story). There are a few other titles that could be shortened also. This would just cut down on the clutter, which can detract a lot from the experience of using any website.
2. The initial instructions on how to set up CHDK could be more streamlined. I can explain this in more detail later, but I think that when I was reading about it the first time, I had to go to at least 2 different instruction pages, and go back and forth between them to make sure I didn't miss anything. It wasn't hard to figure out, but it just took some more time, and for some people that can be a bigger problem than for others. It really isn't that hard to install CHDK, so why make it a little harder when you don't need to?
Please don't take these suggestions as complaints. I hope they're helpful. I'm offering them in the spirit of improvement, and I'll contribute as I have time.