Most interesting. Walked across the bridge by Waterloo Station and fired up googolebuzz on the iPhone. Could not detect where I was. Map took an age to load and no local "buzzes" where found. Eventually it had me located to approx 300m away from where I actually was.

I'm sure this'll get better though. Actually quite interesting to see what people are saying whilst they are using it. Most of it is line noise, (like this), but I'm sure there'll be a "flashmob" or three soon