How will you improve your site after Jagger?

Steps to improve your site, and your ranking, post-Jagger

[Kimkia]

I'd like to see some postings about the positive steps that people have taken to improve their sites, before, during and following Jagger.

Please don't complain about losses following the Jagger update. Let's hear suggestions on how to improve a site in a way that reflects well in Google.

Success stories are particularly welcome. What site improvements have you tried that seem to work well? What doesn't work well any more, and how can it be changed for the better? The web is constantly evolving, and evolution supports survival of the fittest. So what must we do...not only to survive, but to thrive, in an increasingly competitive search engine environment?