Suggestion: allow override of the geolocation-derived search epicentre, it's not always (read: has never been reliable for me, unless I'm using a device with a GPS chip). I do appreciate that's the primary aim for this project, rather than desktop, though.
Also, perhaps display where it thinks you are too, so you can determine if it's massively off.
Also, perhaps display where it thinks you are too, so you can determine if it's massively off.