AOL has made some fireworks with their release of search engine data. What they wanted to do with this data was provide something researchers could work with. The data its self only confirms what I have seen for many years in web logs. That is searches that are done are not very complex, which is why the power options like - / + really are not useful. Why build something no one is going to use ?
Other things that the data made me realize is there is lots of opportunity for keywords to be associated to a certain web site or brand.