Your average discussion board is a pile of information. It is very difficult to sort through to find things that are of value. You may find things that could be treasure for someone else but not for you.
If you have a lot of time you may find some treasure you can use.
I figure if I ask a question that may be pertinent for myself, it may also help someone else before becoming just more of the pile again.
Pile is the rule when it comes to discussion boards, though. By their nature they are not particularly useful repositories of information. It isn’t that they do not contain gems, but good luck finding them within the sheer volume of posts, with all the associated bull, chatter, misdirection and factually incorrect or questionable advice.