tedster - 5:41 pm on May 14, 2011 (gmt 0)

I don't know of a Panda rebound that made such changes, but I certainly know of sites that greatly improved their user stats and lowered their bounce rate by improving the typography - especially making sure that lines of type were not overly long and that line-height was adequate for easy reading. Right or wrong, that all makes for a heightened perception of quality.

There's some good research on this topic at the Software Usability Research Laboratory of Wichita State University [surl.org].