Here's an idea to perhaps raise awareness of the "donate" feature:
Perhaps you could have a little icon or something (similar to UFH or WFA, but not as big or important looking

) that would show up next to a persons username, or maybe underneath a person's rep dots/IM icons, that would indicate that person's support of the forum. Everyone loves having extra stuff next to their username, and this might encourage people to donate, as well as distinguish those that already do. Perhaps a little star saying "ChiefDelphi.com Supporter" right next to it, that would link to the donate page.
Just an idea.
