You should still skim the paper (the answer to the title question is in section 4), but here's a one-sentence summary so you're not going in blind: "As a scamm

You should still skim the paper (the answer to the title question is in section 4), but here's a one-sentence summary so you're not going in blind: "As a scammer, saying you're from Nigeria drives off all but the most gullible (ergo, profitable) marks, allowing you to spend less time on ultimately failed scams."