I typically use text searches in Google:
site:wikitree.com/wiki/ stoke hammond
but I don't think this is a substitute for categories. In fact, I use the site search to help me find profiles to categorise. Having them in a site category means they're embedded in the category tree, and the relationships among the categories. And it means they're queued up for whenever someone wants to, say, take a town under their wing for special attention, or to work on a regional religion or politics or cemetery or surname or immigrant or church project.