Whole-heartedly Agree. More filter options should include optional Latitude and Longitude limitations (None, Only lower limit, Only upper limit, Lower and upper limit) This can square off 1-4 edges of the "circle" and potentially make it a square. This could actually lesson the burden on the geocaching,com servers as people could run fewer pocket queries to cover an area. That is because they would not have to waste returning duplicate caches within overlapping circles. I have not thought through what happens for people on the zero (or 90?/180) longitude or longitude lines. That may need an OR option for the limits? A similar enhancement would be a distance range. Instead just <= a particular distance, add >= a particular distance (subject to overall individual PQ cache count limitations), or at least add a between X and Y distances. That way you could create Rings around earlier PQs in order to fully cover a desired area (again without having to have wasted/inefficient overlapping circles).