What does that thing about “mirror sites” mean?
Our texts are not actually held on the website. The website just holds an index; the files themselves are held on many sites throughout the world, called FTP sites. When you have found the book you’re looking for, and you make that final click to get it, you’re not actually talking to our website any more — you are transferred to the FTP site you selected. Some FTP sites are near you; some are far away. Some may be faster than others, even if they are about the same distance; some may have temporary technical problems. You should usually select the FTP site nearest you. If you find you’re having problems with that one, you can select another.
