We use GitHub Pages a lot for server hosting. For most of these pages even though they have half a million views we don’t pay a dime. There is no cost in setting these kinds of things up. Joining g0v is a way to learn about all the free spaces in the internet. We had to use mostly free of charge services because otherwise when you fork my project you have to pay an additional cost which excludes a lot of people out. So by definition we use only tools that cost nothing.