I don't think this one is redistributable, though. Even if a font is free doesn't make if freeware. Even most freeware, like the Creative Commons Attribution Share Alike 3.0 license, often requires that you give the authoring designer(s) credit when you use it.
This one has a commercial license and is used to promote the site and gain traffic so that other fonts and graphics sell. These are the types of marketing promotions I like, something of quality for your eyeball time and a social shout-out. ;)