Rule #1 of blogging: if you mention your company or service, it should be a link. I don't have hard data, but I think the need for googling "spry fox" (or guessing the url, spryfox.com) lowers the number of people who go on to the OP's site by a full order of magnitude.
This is assuming that this post is primarily marketing rather than a guy who is emotionally invested in both game design and his past getting something off of his chest.
Sure, it acts as self-promotion, but it's cynical to assume that everything that promotes anything was created first and foremost to sell stuff.
Good post otherwise.