I had a debate with a coworker the other day about updating the "last updated" date on webpages. Many webmasters include this line at the bottom of their websites as a tactic to keep their websites "current". The rationale behind this is that because a few characters on a webpage have been changed, the site is considered to have fresh content. Also, according to some, search engines look for the "last updated" line on websites and use this date as an indicator of when a site has indeed been updated. Of course, these theories do not apply to automated scripts.
Personally I don't believe that search engines are that smart (or stupid for that matter) to understand or care about what the "last updated" line means. It seems foolish to me to think that changes one character on a page keeps your content fresh.
Any thoughts? I'd love for someone to prove me wrong - I'd immediately go ahead and add this line to all my sites!