I rarely see them walking the streets...can't recall the last time. I see the trolleys in towns/cities, but has anyone else noticed, they tend to set up where there is the least foot traffic, thereby not many people pass them. A couple of months ago I saw them set up by a bench on a main road where about five people walk past every hour...they were just sitting on the bench and chatting!
They used to always set up in my (previous) local town, always in the same spot, chatting amongst themselves and drinking coffee, waiting for the next ones to take over (It's a very urgent message, you know)...but they've disappeared in recent months.