As of right now (Sep 19, 10:33am EDT) on OS X 10.8.5, Chrome v29.0.1547.65, bold font is not working, for me at least. The post has "Update:" in bold (double asterisk). When I view Chrome Developer Tools, the font has
font-weight:bold from all.css, but then "user agent stylesheet" overrides it.
Bold works here though... so, no idea what the difference is. I've tried hard-refreshing, but doesn't help.
It's also worth noting that Chrome Developer Tools shows the opposite for css rules on this page -- where the "user agent stylesheet" is crossed out and the
font-weight:fold from all.css is not. Perhaps the Android SE site's custom style sheet has a missing
!important or something?