On 08/09/2010, Bill Moseley <moseley at hank.org> wrote: > So if you type two characters you get all keywords that start with those two > characters? What if those two characters return thousands or matching > keywords? Do you ajax fetch just a small number and allow users to scroll > down to fetch another chunk? > > Google can rank it's terms so if you type two characters it can show you the > top few terms that start with those letters. But, if there's no explicit > ranking of the terms then I wonder how to pick what to show. I think the point is you need to implement a search rather than an exhaustive drop-down. Just think, what if Google used a drop down? It's impractical.