They are offering a myster shopper job. The format of the letter appears to be similar of that of Nigerian and Chinese email scams. I highlited the last 2-3 rows, and they appear to be overlays of jibberish letters.
got this number in an email to be a mystery shopper. number is out of California. The message stated they got my email address from the chamber of commerce, however, I know of no chamber of commerce close by in countryside of Oklahoma where I live. I deleted as a scam of some sorts.
The Secrets of Mystery Shopping Revealed
http://www.ftc.gov/bcp/edu/pubs/consumer/alerts/alt151.shtm
They use Counterfeit checks as well
Giving The Bounce To Counterfeit Check Scams
http://www.ftc.gov/bcp/edu/pubs/articles/naps29.pdf
Instruct you to cash bogus check - keep a few hundred for yourself and wire the rest of the money via Western Union or Money Gram as a SCAM to steal your money