Native Search Suggest is to Native Search for Google Suggest is to Google search. It feeds off people using it on the blog, and becomes more useful the more it's used. As you start typing your search terms, a list of matching search terms will pop up that people have been searching for on the blog, which you can select using your cursor keys or mouse. In time, I'll add the display of frequency of searches made per term as well. That should tell you which are the most hot terms on the blog! :) Terms which don't return any results are not suggested, and any additions are reflected immediately! Suggestions are sorted by frequency of their use (thanks to Stephen for the code!)
I was quite surprised when Google didn't include a suggest in their AJAX Search API, and well, I'm an impatient guy. So I decided to add it for myself. That makes it Google AJAX Search 0 - 1 Native Search! I must admit, I'll release this as a hack if enough people request it, because it'll need some extra bit of work which I won't put in unless I see people interested.