My installation log isn't for advertising space. If you want donations, please do the right thing and promote yourself in places where appropriate. My logs are long enough as it is without this.
The right thing to do is to remove it.
EDIT: An unmaintained fork is available:
What kind of messaging would be "okay", what is totally inappropriate, where do you stand on the issue?
Is it appropriate to ask for support at all in this context? Let's discuss the nuance here.