Utter waste of time. Worked with a bloke who did it and kept trying to sign me up. I looked into it, and quickly realised that the only way to actually make money is to have a shit load of people 'working' for you, as you make a cut from their takings. It's nigh on impossible, without a huge amount of commitment, to sign others up, so it's a waste of time.

If you want to go from door to door for hours on end with a tiny amount of income as the result then do it. If you want a 'fast-buck' then look elsewhere.