Ratesetter, one of the original peer-to-peer lending platforms, is doing a thing at the mo' where if you use someone's referral link and invest £1k for a year you get £100 cashback plus the standard three percent interest rate - an effective 13% AER. (They also get £50 added to their account, once you've invested £1k.) I've given it a shot, but wondered if anyone had done it in previous years and had any comments? For them as haven't, it's basically a thing where you throw money at it and it's split into little chunks and lent out to people who can't get a loan through their bank. They repay at a lower rate of interest than a traditional loan outfit would charge, you receive a higher rate of interest than a traditional savings account would give you, and the company skims a percentage off the top. A couple of the peer-to-peer sites have gone bust recently, but Ratesetter's been around a while - and, the thing that made me sit up and take notice, uses some of its skim to set up a fund so that in the not-unlikely event that one of these poor credit risks absconds with the dosh the investor still gets both the invested cash back *and* the lost interest. Apparently they've never failed to do so. However, deposits in the thing aren't FSCS protected, so if Ratesetter itself goes mammaries-skyward you've lost the lot. There's also a new thing - introduced today, in fact - where you have to agree to invest no more than ten percent of your net worth excluding primary residence in P2P lending services - though that's a voluntary self-certification thing, and given the lack of protection sounds pretty sensible.