Create an account on Flattr.com (mine is here); Submit the URL of your free software project to the Flattr directory with a good description and the proper tags (here’s my entry for dpkg); Add a Flattr button on your website (I put one on wiki.debian.org/Teams/Dpkg); Inform your users and reach out to free software users using Flattr by registering your project in Flattr FOSS.

And I’m not alone, Joey Hess made 25 EUR in one week only.

And right now only 30K people are using Flattr. I expect this number to increase significantly now that invites are no longer required to open a Flattr account (see the announce on Flattr’s blog).

It’s time to spread the word about Flattr FOSS!