Today I on my own Facebook page ( not businesses) I offered the first 5 peope to contact via my inbox a free clean . made sure it was "today only" to create a deadline and bit of urgency . Sure enough 5 cheapskate friends of mine got in touch ( within 20 mins)... I completed the work and knocked the houses each side. All the people who inboxed me agreed to a regular clean and I gained 2 of their nieghbours also. So thats 7 new customers, and a good value. It wasnt any leg work really, alright today I just earnt from the neighbours , and dont think you could do it every week , without boring your mates to death on Facebook..but it worked for me. Obviously nobody wants to work for nothing, but as I say it seems to have paid off , time will tell.