P: Make filter selection more user friendly (e.g., for keywords and location)

Filtering is a necessary condition in any reasonably large catalog.  Drop downs are effective for small lists, but Location and Keywords can get quite lenghty and are difficult to sort through as is.    Please make the filtering experience more user friendly so its possible to explore these as opposed to knowing (eg., currently if you "know" the location you can type in the first letter, if you do not, you have to scroll through an endlessly long list).