You can go to the SMF mother site here: http://www.simplemachines.org
and if you wish, click "Community" to visit their support forum. Their support forum is much like IHG's forum but vastly larger since there a vast number of people operating SMF forums, including Greg and myself.
For example, when you click "click to add reputation" you see the number update, but the page itself doesn't. That's because it used AJAX to update just the code showing the total reputation.
SMF and the other forum softwares, the blogging software WordPress, and most all modern websites use all these techniques.
The alternative is Microsoft IIS which is paid software from the evil Bill Gates. I believe a bit more than half the servers on the Internet use "LAMP" = Linux + Apache + MySQL + PHP. It is an ongoing argument which is best but many like me see LAMP as vastly superior and also free too. Some corporations tend towards Microsoft IIS because bean counters make their decisions and they don't trust anything that they don't have to pay for.
Linux = the basic server operating system
Apache = the HTTP server that serves up web pages
MySql = the database that powers it all
PHP = the PHP Hypertext Processor (don't ask what PHP stands for, it's recursive)
Unlike IHG's server which uses Apache, our server at Hot Honeys uses Nginx which is a competing HTTP server and I believe a better one, but again many disagree which is best. Both Apache and Nginx do the same job but in different ways.
We will be migrating IHG and its .EU website to our own server in the near future. If I didn't tell you when we moved them you wouldn't even notice it.