I have long used a Paypal-based donation system on this site, but I have now replaced it with flattr.
Flattr is a micro-donation system that makes it easy to reward content creators for their hard work.
You can flattr the entire site by clicking on the flattr button at the top of the sidebar on the right.
You can flattr individual episodes using the flattr buttons at the top of each episode post, see above.
Bonus: If you use Instacast, you can set it up to automatically flattr the podcasts that you listen to.
Here are a few more ways to support the show.