Yeah, Meh, that website's probably good only to see what each of the different Linux desktops looks like. With a site like that, you're sending all kinds of data over the interent. If your connection or thiers isn't big enough to handle it, and depending on the technology they're using, you're likely going to have a big bottleneck causing time issues. If you want to try it before you buy it (just a saying, Linux is free), then you should do as Condobloke suggests, download 1, or a few, install to a pen drive, boot to it and play around. There are distros made specifically for that, like Knoppix, but you can install any distro to a pen drive. Just FYI, they'll likely run a little slower this way than they would by installing to an actual hard drive, but they'll be lightyears faster than trying to run it over the internet like you're experiencing with that website.