Do you want to find Tweets within a certain geographical radius? Here is one way of doing it.
Say you are looking for mentions of “Osteopath” within 20 miles of the centre of Manchester:
1. Go to http://maps.google.co.uk and find Manchester, UK – point to it on the map and right click. Select “whats here?”. You should now see the geo location appear in the search box at the top e.g.”53.490905,-2.235718″.
2. Go to the search box on Twitter and type (without the quotes “osteopath geocode:53.490905,-2.235718,20mi”
3. If you want to change the radius, just change the “20mi” to the number of miles you want the range to be.
It’s not completely accurate, but it works far better than searching place names e.g. “Osteopath Manchester” where you often get no results at all.