the importance of spelling

Got this from a chain mail which because I am so bored, exasperated and jaded at the same time, I decided to open. And alas, it's actually quite interesting.

fi yuo cna raed
tihs, yuo hvae a sgtrane mnid too. Cna yuo raed tihs? Olny 55 plepoe out of
100 can.

i cdnuolt blveiee taht I cluod
aulaclty uesdnatnrd waht I was rdanieg. The phaonmneal pweor of the hmuan
mnid, aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it dseno't mtaetr in
waht oerdr the ltteres in a wrod are, the olny iproamtnt tihng is taht the
frsit and lsat ltteer be
in th e rgh it pclae.
The rset can be a taotl mses and you can sitll raed it whotuit a pboerlm. Tihs
is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod
as a wlohe. Azanmig huh? yaeh and I awlyas tghuhot slpeling was ipmorantt!