“Margaret” backward is “teragram”. A teragram is the same as a megatonne.
I do get a lot of spam from organizations people and offering to supply “content” for my blog, and more often than not they say something like:
I try writing back to these people because I want to know where they got the idea that I own slatestarcodex. So far none of them has returned my mail so it remains a mystery.
Today's spam solicitation was more amusing though:
Hee hee hee.
Sorry, Kenny, not shitty enough!