I think some of you are missing the original poster's point-- he's not complaining about "how much is it worth?"-type questions; I think his pet peeve is with responses that either do not answer the question in a meaningful manner, or responses that are essentially uninformed, "I'll throw my two cents in even though I don't really know much about it," sorts of answers.
If that's the gist of it, I would be inclined to agree. There are a fair amount of topics here that fall into that category.
Here's a silly example. Question: "Hey, I just bought a .357 Python. Can I shoot .38 Special ammunition through it?"
I would consider these sorts of responses spurious or useless:
"Well, I don't have a Python, but I have a GP100, and that feeds 38 just fine, so I would think it's ok."
"I use .44 Special in my Anaconda all the time, so I don't see why not."
"I wouldn't do it, the barrel says 357 doesn't it? Stick with that."
"I don't own a 357, but the numbers are different, so you probably shouldn't."
"My Police Positive won't take 38 Special, only 38 S&W, so I think the same concept would apply to yours."
"I once read in a magazine twenty years ago that you shouldn't shoot hard-cast lead rounds through a hammer-forged barrel."
See what I mean? Now, to those who supply the knowledgeable, informative answers, please keep it up.