The best way to contribute to the project is to be diligent about reporting bugs, and perhaps reading the code, or even contributing code if able. This project is open source.
I won't accept monetary donations. However, if that's one way you would like to support the site, then I think the best way to do that would be to support one of the main open source projects I used to build the site, Django: https://www.djangoproject.com/fundraising/
Thanks for playing!