Supporting Members receive a wide range of account extras that go above and beyond what regular Registered Members get.
Supporters get:
The ability to have your member name appear in red in all of your posts, and in the "Currently Active Users" listing (just like how Moderators are Green).
A bigger PM box, your PM box will grow to 1000 messages maximum (all folders combined), and you'll have the ability to PM upto 20 members at once. You will also be able to use PM message receipts and tracking.
Access to a special “Supporting Members” only forum for discussions about the board or life in general.
The ability to setup your own custom user title in your User CP to appear under your name (instead of New Member, Regular Member, Moderator etc.).
Double the space (512MB) of a regular member (256MB) in the Photo Gallery.
Bigger and more detailed custom avatars.
The ability to be "invisible", meaning that you can appear off-line while browsing ScubaBoard.
The ability to no longer see our advertising campaigns (unless you want to... )