Payswarm Donations

I've been looking through the documentation and have been trying to answer
the question:  is it possible with Payswarm to donate when accessing a
digital resource and bookmark to donate when funds are available? I think
use case 2.5 <1> supports the first, but what about the second?

-Brent

<1> http://payswarm.com/specs/source/use-cases/

Website: A Distributed Economy (http://adistributedeconomy.blogspot.com)