Keep PT Sans?
This is more an observation than an issue.
Currently, the font PT Sans (PTS55F-webfont) is served as a webfont for regular
text on the website and blog. However, this is a fairly generic sans-serif font,
and I doubt that anyone notices the difference to their default local sans-serif font.
You could (slightly) decrease traffic and increase loading speed by removing
PT Sans and simply using font-family:sans-serif;
.
If desired, I can make a branch with this change.