Very small charges (less than $0.10, maybe less than $0.01) for services (typically for content, or use of an application) on the internet or web.
and the other direction: small payments to end-user for value they provide
One hope for Business Models For Information.
does a Tip Jar count?
Jakob Nielsen wants it.
Some (esp Clay Shirky) say it will never happen. http://maddog.weblogs.com/stories/storyReader$214
http://www.w3.org/ECommerce/Micropayments/
http://www.fastcompany.com/online/52/untangle.html
http://www.darwinmag.com/read/thoughts/column.html?ArticleID=511
Some channels (can be used separately or in combination)
EBT (bank account)