Tihs Is Petrty Stragne
You hvae to cehck tihs out:

“Can you 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 the rghit 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!
“if you can raed tihs forwrad it.”
[Soruce]



If you make as many typos as I do, you very rapidly learn to read that sort of stuff :)
Haha, guilty! Makes proofreading especially painful sometimes, as everything usually looks just fine. :D