If someone misspelled something in an email reply, I would just assume they had a misspelling in their automated response form letter. That would make me think much less of the company. I'm glad it converted better for you, but I'm guessing that another variable changed at the same time that actually made the difference.
Even if a company misspelled a word in an email that I assumed was hand written, I would think less of that company- especially, if it was a product such as software, where precision in spelling counts.
I agree with the idea that another variable changed near the same time. But I am still interested in hearing more stories like this, since it is an interesting concept in what I guess could be called 'sociology of marketing'.
is tihs just a hook for gaze fixation - the eyes of many are drawn to spelling errors (this seems particularly big in the geek/programming community) and so in order to get people to notice your writing in some speling errors can be a good.
