This from an email going auornd tihs mroinng:

Aoccdrnig to a rscheeahcr at an Elingsh 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 are in the rghit pclae. The rset can be a toatl mses
and you can sitll raed it wouthit porbelm.

Tihs is bcuseae we do not raed ervey lteter by it slef but the wrod as a
wlohe.