Can you add something like automatic advertisement ?
I mean that if the user can set some rules so that if some bitcoins arrive at the deposit address then they will be used instantly for a pre-configured advertisement.
The best is if you can add more deposit addresses, example:
1) 17834h9685jy9d45t097845f78 : adv 1
2) 10v2m5893u2c892mv58w89vb : adv 2
3) 11498v20m589b3m89540489v : nothing
This will make possible to connect more services with your coinurl, and make them all working without touching anything
Some services will make bitcoin and advertise themselves on coinurl