Language change through "ignorance"

[RonButters at AOL.COM]

One of my colleagues wrote me this in an e-mail. It illustrates perfectly 
Arnold Zwicky's recent comment to the effect that language change takes place in 
part because EVERYBODY sometimes marches to a different drummer. Has ANYBODY 
seen this before? (I suppose if I did I GOOGLE search I'd find lots of 
instances of this new "idiom").

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> Hope everything is in tack.  I will come in Friday or Monday. ...
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