Move /speaking/ to /talks/ for better hierarchy.
Better slugs for talk pages.
Open twitter/github in new tabs.
Add subtitle to talk page.
Add a footer on talks to promote myself.
Give some indication the header icons are clickable.
Give the footer a min-height so it has some breathing room in a small browser.
Fix margin and padding on the biglist.
Make the index subnav links bold to give them a little visual distinctiveness from the blog links below.