I did not know Aaron personally but I am quite familiar with two of his projects. Reddit of course, and the less known web.py framework. I use the latter on many of my website related projects and can appreciate the philosophy behind it. A philosophy he shared, one for minimal, well working and robust tools for writing software. His mindset is one of a dying breed of programmers/hackers and it’s a tragedy that he was lost. But through this website and framework his great contributions to the Reddit community and the open source software community alike he will live on. My regards to the family and friends of Aaron.