Got this offer from Robinhood. What's going on here?

See the offer here. I assume its open to everyone and not targeting. Read through all the disclaimers and FAQ, still can't quite figure out what's going on here. Who am I lending to? How risky is it? Obviously Robinhood wouldn't do this unless they could profit from it, and it's pretty safe to assume I'd be facing risks as well (7% returns would never be risk free). But I just have no way to quantify it since I don't really understand what's being sold. Anyone know? Or can explain? submit

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