1. Actually return the results matching the words that people typed in your search box. The more they match, the more they go up.
More and more, it has become extremely disappointing what you get back from Google (and others as well). Verbatim search (where you surround exact terms in quotes), seems to have vanished in the last year or so. More often than not I have clicked on a result, only to find out that my particular query is nowhere to be found on the site, but some "related stuff" does.