Good question, I hadn't actually counted until now, but it turns out there are 195 in total (as of this 1.0.0 release). There were a variety of sources, some were complete nonsense (monkeys), some were funny quotes from the Internet (fortune cookies), and others were just me sitting down and trying to craft and individual narrative for each "character" in the game. Some are meant to be funny on their own, but others are meant to provide humor through juxtaposition.
Writing all of the different posts was the largest part of this project, just due to the sheer volume of content needed for it not to feel too repetitive.