I have assembled some POI statistics for Europe and Germany. The idea is to track development over the next couple of weeks/months. Just follow the link or go to the OSM wiki stats page.

http://jef-hd-ma.freehostia.com/uploaded_files/POI_statistics_EU_D.html

The data comes from cloudmade's POI.gpx files and is extracted with a simple bash script. I am happy to pass it on in case someone is interested

UPDATE (7/12/09): There is an error in the calculations. It only counts POIs with names. I will update it tonight