If you're looking for a specific topic with a relatively narrow focus, question and answer search engines might just be what you're looking for. These search engines aggregate the vast resources of the Web into strictly defined categories; in other words, they make it extremely easy to find something.
What are social bookmarking search engines? Basically, these are sites that allow users to post their favorite sites, using tags (or keywords) to categorize and organize them; then other users can take these bookmarks and add them to their own collection or share them with even more users. Here are my picks for the top ten social bookkmarking sites on the Web - the sites that consistently deliver some of the best content you'll want to share, discover, and store.