In tip #3 I showed a quick javascript tip to hide your flash messages after a time delay. This technique may not be suitable for every application however; hiding feedback messages too quickly may make your site less accessible, especially to users who are visually impaired.

Rails is constantly evolving. Although each new version of Rails is (usually) an improvement on the last, upgrading to the latest version can sometimes lead to annoying problems with your existing apps. For example, when upgrading to Rails 2.3.2, you may have found your earlier apps raise exceptions due to...