this is superficial, but that font looks terrible, at least on my screen. honestly, it looks like an amateur's first attempt at making a font. otherwise it's a cool product idea :)
Firefox 3.6.8, Windows 7.
Otherwise, great design and idea.
notice how the r and l characters seem to be a bit higher, and (at least in my opinion) the b and o chars seems to be too "fat", especially relative to the e. also, the bottom part of the a looks too thick...just overall looks a bit weird, definitely not like what nickstamas posted above.
this is in FF 3.6.8 on XP with cleartype enabled, btw.