Thanks for a potentially very useful plugin. Unfortunately it has some issues. It would also be nice to be able to hide or deactivate the request for a donation on the header without hacking your code. Specially after a donation has been made.
Issue #1. On its own menu (Network Admin>Plugins>Plugin Management) it throw a warning cause a deprecated function, and an other warning for an undefined variable.
'Notice: is_site_admin is deprecated since version 3.0! Use is_super_admin() instead.
Notice: Undefined index: saved'
Issue #2. There is some inconsistency across the Help and the actual functionality of the plugin.
Anyway, thanks for the inspiration, I do appreciate that.