I read in another thread (see I can't find it) a suggestion of having some threads with known issues, suggestions or help that are probably relevant to many. There would be no way for anyone but the original poster, moderator, or those "in the know" to post to it. That way the information doesn't get cluttered with so many different folks problems or questions. It wouldn't prevent a person from responding to the information, but their post somehow would not be seen. All moderators could use those outside posts to further give information to the said thread.
I know I often start reading something of interest to me and buy the time it gets on down to 3 or 4 pages, I have no idea what's going on.
But don't do away with individual posts either.
Easier said then done I suppose.
Well, just a suggestion and I know I do my own amount of cluttering.
I agree with Eddy's .....Clean Up the Forum idea.