Google Analytics

regular expression is a set of characters that represents a larger set of data.

find a complete list of filter fields and what they represent in the Google Analytics support documents at http://troni.me/aNak8f.

most often used to replace long, unreadable URLs with more human-readable information.

enable e-commerce tracking for each profile.

affect other settings in Google Analytics, most notably goal settings (goals are calculated using the request URI).

Request URI is created using the information in the location bar of the browser. Google Analytics removes the subdomain, the hostname, and the domain extension.

use the Top Content report to identify all query-string parameters. Sort the pageview metrics in ascending order. This will help you quickly identify which URLs get only one or two pageviews. These URLs usually contain a unique query-string parameter that may or may not be useful.

filters are business rules.

order ID values and timestamps.