"POWERED BY STEAMGUARD"First time I've seen this scam. I figure no harm done warning others who might not have seen it either. He was so polite, calling me 'sir', too.
Welp, not only that's not Steam Guard's function, but they also wrote it as a single word (later on they wrote it all in lowercase, and afterwards properly as two separate words). Plus they wrote "successfull" with two Ls, and didn't use any punctuation marks between "...credited with the amount of ($70.00)" (not that there was any need to use brackets for the cash amount) and "it will be available...".
Plus "Activated" starts with a capital letter for no apparent reason, and that sentence doesn't end with a period. I don't know, it sounds fishy to me.