Under the Stackoverflow FAQ the section entitled "Are there any search options?" could use an update. I have to search on how to search on stackoverflow because the search options are hidden so well. The natural place for this kind of thing is in the FAQ. Basically it just needs to have a summary of http://stackoverflow.com/search. Also, a link to the above linked search page on the home page would be nice. Here is my suggestion:
Are there any search options? Indeed there are. To search, type in the box at the top right of every page and press Enter. For example, 'apples oranges' will return any questions or answers containing "apples" or "oranges". If that's not specific enough, you can narrow your search even further. You can narrow your search to specific tags like this: '[tag] apples oranges' or this: '[tag] [another-tag] apples oranges' or to a phrase like this: '"apples oranges"' or to ensure that the words appear in the results '+apples +oranges'. Advanced Super Ninja Search Options are available at http://stackoverflow.com/search. … but you must first snatch this pebble from my hand, grasshopper.
I am not sure what that last part means but it must be important to somebody or it wouldn't be there.