No way am I making every website font bigger for the sake of RSpeed
The main post text is the same size as almost every other font on the site, which is just poor design. You're eyes can't adjust to what's important and what's not. And between huge headers before posts, and huge signatures, the actual area of readable content is so hidden that it honestly makes me not even read most of the posts. Your main post text should definitely be bigger than things like "mikecentola's Garage". There is just TOO MUCH going on in each post to allow tiny text. Sure, we can all ultimately read it, but it doesn't mean it's good design, or user friendly.
Just being honest here.