Ode to a spell checker

Eye halve a spelling checker
It came with my pea sea
It plainly marks four my revue
Miss steaks eye kin knot sea.

Eye strike a key and type a word
and weight four it two say
Weather eye am wrong oar write
It shows me strait a weigh.

As soon as a mist ache is maid
It nose bee fore two long
And eye can put the error rite
Its rare lea ever wrong.

Eye have run this poem threw it
I am shore your pleased two no
Its letter perfect awl the weigh
My checker tolled me sew.

(Author unknown)

Note: There are a number of different version of this on the Internet. Some have only two verses, others are much longer than the above poem; but I think the message comes across rather well.