Welcome to WebmasterWorld Guest from 126.96.36.199
Forum Moderators: bill
The mobile visitors are viewing "local search" type content, i.e. business listings, for Tokyo and various other cities in Japan.
I'm guessing that once Google launches its mobile ads for the Japanese market that will be a good option, but until then we've got quite a lot of mobile pageviews and no firm idea of what to do with the traffic.
All thoughts appreciated.