I see problem in this model that who will independently verify that lawn is mowed properly and payment should be released?
How can system stop service taker abusing the system?
How can system stop service taker abusing the system?
Or the home owner refusing to pay because the lawn wasn't cut "correctly".
Such a "service of services" would have too much manual input to work... Not to mention lawsuits....
There would be a dispute system. If an issue arises, the two must make their cases. It will then be up to the public to vote based on the stories told. This is better than an opaque system like PayPal which would centrally decide on who they think is right. It will be fairer, more accurate, less centralised.