I've had issues where clicking on the "Filter Finds" does not work for me, the page I go to considers me to be logged out. However, I've been noticing I can click the Login link on the top right and then re-login and it(filter finds) works fine.
Only real suggestions I would want for that page, are; Ability to specify type of Cache. (I personally would like to have 'regular cache' only, a virtual cache/multi-cache may not be in my mood for the day, or I may be taking a geonewbie and I preferr to go to traditionals for those 'first trips'.) Also, I'd like to have the option to have any of the "Pocket Query" requests to be launched after editing. This way if I edit my queries, I can get the results relatively soon, not necessarily needing to wait for the next day? Additionally, an option to limit the search for caches along a direction/bearing. Much more advanced would be a sort of "Here are two corners of a square, give me anything inside it that matches."
The latter ones would require quite a bit more programming/CPU time I can imagine...
Other than that, I really have nothing I can think of that I'd change on the Nearest Cache Page. Just "More Powerful Searchings".
