Flickr determines the most popular cameras based on data automatically included with most digital cameras today. The most popular “point and shoot” camera is the Canon Powershot SD400, and camera phone is the Sony Ericsson K750i.
I agree with Paul Kedrosky – this is just the tip of the iceberg when it comes to cool data that web services can collect and give back (or sell back) to the community. Paul even thinks soon we’ll see companies that make more revenue from ancillary data than from the services themselves.
I’m looking forward to seeing how we can leverage all the great geotagging data that Flickr’s been collecting these last few months, too.