What is a file that allows a website to identify you as a return guest and collect data about you?

They are called "cookies". They are easy to setup using JavaScript / HTML coding which actually just creates a new txt file in your temporary internet files folder and writes to it. There are a few websites that show you how.

I suggest http://triviatime.awardspace.com triviatime.awardspace.com or snipr.com/triviafun for short for that kind of info. it's a really interesting site and a great resource with lots of information.

I think it will be very easy to find all the info you need by following all three easy steps, and unlike all the other sites, it's actually FUN!

I hope you enjoy. Good luck!