You might want to read this.
Basically, you donate money by using the PayPal link at the top of the page, but you can also get supporter status if you win certain competitions held in the forum and also someone else might donate on your behalf if lucky.
I'm using Tumblr as a substitute until I get a blog here, and I currently have 4,320 posts so yeah I'm getting closer.
You just need to post in as many threads as you can, as long as it's not Trivia-based
Supporters can be identified by the italic blue names, an example is in this picture: