Sweet catch! I'll fix that now. Thanks! I try to keep the grammar and typographical errors to a dull roar, but proofreading your own stuff can be pretty difficult.
In a way, I'm kinda reminded of the psychology behind the way we read things. We don't look at letters so much as we look at words. You can even scramble the the words and, so long as the letters are correct and the first and last letters are correct, it's still pretty easy to read it.
See:
Aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it deosn't mttaer in waht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht the frist and lsat ltteer be at the rghit pclae. The rset can be a toatl mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe.
(I probably should have buried that in a bigger paragraph. There's an extra 'the' in the second paragraph that most folks won't pick up. It has to do with how we read.)