
You'd think that giving trailers out for free was somehow a bad thing...
Apple.com/trailers houses some absolutely fantastic trailers. You can watch them for free, of course, because trailers are basically advertising. But largely, you can't actually download them and give them to your friends to watch. You have to stream them and watch them live.
It used to be that looking at the source HTML for a page made it obvious what the actual file you were downloading was, so you could download it with getright (or something similar) and watch it whenever you felt like it (or copy it to a CD and give it to a friend). But then Apple realised people were doing that and were then downloading the video without viewing the glory that is apple.com. So now, when you go to the trailer page, the page points you at a .mov (i.e. a quicktime movie file), but that .mov merely contains a command telling quicktime where to find the actual file.
Bugger, you might think, that means I can't find the file's direct link. And you'd be kinda right.
You see, every time something gets downloaded over the internet, it's because a HTTP (HyperText Transport Protocol) message gets sent from your computer to a server. The message says "send me this file". The server then sends you that file. Now, some people don't have direct connections to the internet (if, for instance, they're inside a corporation) so they use proxy servers. The way these work is that your computer asks the proxy server for the file, the proxy server asks the web server for the file, the web server passes it to the proxy and the proxy passes it on to your computer.
And if you go and download a free proxy server, you can install it on your machine, tell Internet Explorer you want to use the proxy to connect to the internet, start downloading the movie, cancel the download, check the logs to see what file was actually being requested and then use _that_ information to get Getright to download the file.
And that's why, whenever a new trailer gets mentioned on Slashdot, someone posts the direct link about 3 minutes later.
And that's how I have a copy of the new X2 trailer on my hard drive right now, even though Apple doesn't want me to.