Legacy Page. I doubt many people use Cufon these days.
Cufon fonts are one of the many methods of incorporating custom fonts into a web page. There are several others. Cufon is one of the earlier methods.
Cufon fonts available at time of writing displayed below. These are all free fonts with no copyright restrictions, but of course it would be polite to give appropriate credits to the creators.
The following are from the Larabie collection