All the extra information on the tags page seems like a good idea and the page looks fine on, say, StackOverflow, where the tags still jump out because of their background and bounding box, but our tags are nearly the same font/size/weight as the rest of the text on that page and have no bounding box, so the tags do not stand out.
After a bit of playing around with the styles, I think it would be sufficient to up the
14px and add
font-weight:bold on the element/class
a.post-tag on that page.