FREESPOT: HOW TO FIND FREE WIRELESS ACCESS IN JAPAN
If you are looking for free wireless access in Tokyo or Japan, and can read Japanese, try Freespot for Free Wireless Access. They provide free wireless access points.
(Sorry for the stilted English in this post--I'm trying to optimize for both Japanese and English Google so that other expats will find this on a search for "Free Wireless Access in Japan" or "Free Wireless Access in Tokyo." It's more a Public Service Announcement than a blog entry.)