XHTML2PDF is a converter for HTML/XHTML and CSS to PDF and a Python package.

I run a cron job every day that calls the Twitter API and fetches my most recent updates and saves each one as a separate XML file to a local computer in nested YYYY/MM/DD folders. That's all it does. It's been running every day since April 2008 and, until now, I've not done anything with all those files. One reason that I run the cron job in the first place is that not backing up your stuff on third-party services is just silly. That's not meant as a judgment or a finger-pointy thing, against any particular company or cloud-castle. It's just that many copies keeps stuff safe.