What browser are you using? I'm on Safari 4 and the page looked like this http://i31.tinypic.com/mvmgx0.png until the font was downloaded (took almost 10 seconds on my slow connection).

Edit: I tried it with Firefox and it does indeed use the default font until the new one is downloaded. The transition is not nice but better than nothing.

Well, I can definitely agree with you on that, the initial load was really uncomfortable. I was talking about total overhead input/output though, would likely be less if it caches, instead of having a slew of flash/images to handle it...though you could argue the flash/images would be in a lot less "burst" and you'd have to hit x number of pages to exceed the threshold.

In any case, to me it's just really more fluff, and not likely to be really usable for a long time to come...just like things like rounded corners in CSS are fun, but a narrow solution when you have to support IE6...and yes, a lot of us still HAVE to support it. I won't turn down a job just because they have that requirement, just have to adjust my expectations.