Looking back at unanswered threads, I see that there are hundreds of them (maybe thousands). Is there some general rule-of-thumb about how far back one should go in looking for unanswered questions to which to respond? I know that I have been frustrated a time or two in the past when a question of mine goes unanswered, which is one of the reasons I started getting on and providing solutions myself. It's probably not worthwhile to answer posts that are months old, but I'm wondering where to draw the line. Thoughts?