This was requested by several members and I have finally completed it in working stage:
http://www.xtnodes.com/xt_rented_mining.php
BIP101 is great, but only miners have had a vote until now.
Now users, merchants and exchanges have a way to contribute toward mining BIP101 blocks.
Donated funds are not purely sunk costs. Your bitcoin will be re-invested over and over resulting in a lot of recurring hashpower for your bitcoin donation.
This is a work in progress. Suggestions welcome.