As part of our desire to provide ever improving educational and help resources to all Google Analytics users, we are experimenting with providing Help Center articles authored by our Google Analytics Authorized Consultants. Our first contributors are EpikOne, the published author of this help center article and LunaMetrics, author of a series of concise and helpful explanations of POSIX Regular Expressions as they relate to Google Analytics. (Click on each of the wildcard symbols in this overview article to see them all.) Stay tuned, more articles are in the pipeline.