While playing, an idea popped into my head but I was almost completely sure it had already been discussed somewhere. So I go to the forums, search for "quest log" and get 169 matches in no particular order. Awesome, I totally want to check them all.
How about sorting search results somehow? For example, by posted or last reply time. So it would be easy to see if a particular idea had been discussed in the, say, last six months.