Hello,
on
https://multibit.org/blog/2014/04/11/multibit-hd-brit.htmla MultiBit usage transaction fee of 1000 Satoshi is announced to be planned for future releases.
I like this idea very much, I think micropayment is a good purpose for Bitcoin, and the developers earn it. And the developers need to get money for their work from the users of Bitcoin and not from other sources, because the interests of other money givers could collide with the interest of the Bitcoin.
Maybe in the future, there will be also other services like internet search engines that take e.g. 1 Satoshi per service request instead of collecting user data in order to sell commercial advertising placements to their business customers for which the service users pay indirectly through the advertised products price.