The most recent posting of the Unanswered Questions Community Ad by rm -rf lists 349 questions as unanswered. This is nearly 10% of the total questions on the site. Some of the questions are genuinely hard, and that is reflected in the number of votes they have. But, most have 5 votes or less.
I think we should organize a clean-up party to answer the questions that can be answered, prod the OPs as appropriate, and to close those that should be closed. Obviously, some of the tougher questions will likely remain open and unanswered, but there is a lot of low hanging fruit.