The Uselessness of the Web

How come every time I search on google to find the answer to a question that obviously has been asked before the only matches I get are in forums that have someone asking the same question, and never are there any answers posted? Either there are no answers, or some overzealous moderator has come in and removed the answer saying that it belongs in another area on the forum, with no link to help find it. There needs to be a way to rank the results so that web forums with actual responses are before ones with no replies, maybe make a standard <meta> tag that has a reply count that forums can implement.