Like the above comment says, apparently I’m indeed a nerd. It’s actually a battle to create interactive experiences in websites, sometimes called Web 2.0. Flash is a technology developed by Macromedia (now Adobe) to create richer internet applications and most commonly games. I’m sure you have played some Flash games, here’s a good one: Flow. AJAX is a competing technology, it stands for Asynchronous JavaScript and XML, and is mostly used for nice web applications, not so much for games. If you have a Gmail account or have ever used Google Maps or Google Reader then you have used some AJAX based applications (If not, try them now!). Hopes this clarifies the funny side of this picture :P.