Donations were an SBC feature that let you donate real money to the site to help support it. Main page could be found here.
They were first released on September 18th, 2011, though they weren't very active at first. Then, they got an upgrade on November 6th, 2011, with a full-fledged Donors group (named "Loyal Customers") and Donors rank with special features. One notable donation around this time was SpongeOddFan's donation of $100 (even though it did not go through due to issues). They were then temporarily disabled in December 2011.
They had a brief return for phpBB3, where users could donate to the site to help plan for Orca.
They returned again for Orca 8.1 on August 19th, 2012, with some new features, such as Donation Goals, and support for foreign currencies. They were also famous for giving users glowing names for donating.
As of 2015, they have been discontinued as the site has no use for them anymore, or any goals to use. They will not be returning, since the ability to turn on ads allows users to "donate" to the site in a way now. Donations somewhat had a return in March 2017 in the form of the ALS Fundraiser.
If you donated, here were the rewards:
-$5: 30 days of glowing name and 1,000 doubloons
-$10: 3 months of glowing name and 1,000 doubloons
-$15: 1 year of glowing name and 1,000 doubloons
-$25+: 1 year of glowing name and 5,000 doubloons
With their return to Orca came Donation Goals. Here is a list of goals and how much was donated for them:
1. New Server (ran from August 11th, 2012 to August 25th, 2012): If we get enough funds, we'll get a new server. If we get a new server, new features will come your way!
Goal: $50 | Received: $40
2. Octerror Fest 2012 (ran from September 15th, 2012 to October 1st, 2012): Support Octerror Fest 2012 by donating $5 or more and help make this the best Octerror Fest ever!
Goal: $20 | Received: $5
3. Christmas Funds! (ran from November 27th, 2012 to December 16th, 2012): Help us make this the best Christmas possible not only on SBC, but on all of SpongeBob Universe!
Goal: $100 | Received: $15
4. Emergency Funds Needed! (ran from December 28th, 2012 to December 31st, 2012): We need emergency funds of $13 as soon as possible in order to avoid a crisis! Please donate as much or as little as you can, anything is appreciated! You will get to see SpongeBob Universe two hours earlier than everyone else, as well as get special clothing for your character below your avatar!
Goal: $13 | Received: $15
5. Next Generation SBU (ran from January 22nd, 2013 to February 22nd, 2013): By March 31st, help us raise $700 for an experience on SpongeBob Universe that you will fall in love with and spend countless hours on. Anything from $5 to $100 is appreciated.
Goal: $700 | Received: $0
6. SpongeBob Universe Surprise! (running from August 10th, 2013 to August 18th, 2013): Help SBU raise some funds for a special surprise everyone will enjoy! Donators will receive a sneak peek, a glowing name, and an exclusive clothing item for their fish.
Goal: $60 | Received: $25
7. Server Funds (running from August 18th, 2013 to August 27th, 2013): WE NEED EMERGENCY SERVER FUNDS!
Goal: $175 | Received: $0