Maybe the way policing is done with forensics more than people looking at crimes is why we dont see many out and about. When i worked in the police station at Newton Abbot 10 years ago, they did have a facebook room where 6 officers were studying the criminals daily pages. Lots to be gained from facebook as people tend to say what they are doing and where they go.
I think there should be a uniformed officer in the town during the day. It keeps things calm, or it used to !