Nice read for anyone into getting advanced with Analytics: Testing Google Analytics Regular Expressions In Real Time Sidenote: anyone else here geeky enough to write RegEx for fun...? Just curious. -Michael
Regular expressions, matching patterns in strings of text... it's used a lot in Perl and PHP, and Javascript, and most languages have some implementation of it.
BTW, anyone wanting to play with Regex can do so here: http://www.regular-expressions.info/javascriptexample.html If you want to get really advanced, of course, start writing your own code in JavaScript and PHP to test it out. I've found that www.php.net/pcre has most of what I've needed reference-wise. RegEx gets pretty hardcore, you just need to learn it for yourself.