If you have a keen eye, you may have noticed that bold text looks a tad better than before, especially if you've been using Chrome for Mac.
Why is this? Well it turns out when I previously changed the blog font to PT Sans, Blogger never imported the bold version of the font. This meant that whenever I specified bold text in my blog, it was up to your browser to render the font. The result was what's known as faux bold. This would make bold text appear blurry for most browsers, and on Chrome for Mac, bold was barely visible if at all.
To remedy this, I manually imported the bold version of PT Sans from Google Fonts to this blog. Now every browser should see the true bold PT Sans, not the fake one.