Airtasker has a review system, like Airbnb and hundreds of other sites. It means you can see what people have written previously about the experience they have had with someone.
Most of the people who end up responding to my tasks are foreign students - the majority from South America, for some reason.
There are some odd tasks that get posted on Airtasker. I saw one once where somebody wanted a person to stand in a queue for the tickets to something for 6 hours or so. The oddest task I have posted was, 'Teach my Daughter Algebra.' My 14 year old announced one Monday that she had a test on algebra on the Wednesday and she didn't get it. I didn't get it either, so I posted the task on the Monday and a bloke my age, who just happened to live one street away, responded. He has kids the same age as mine, and he's a maths whiz, so he came round on the Tuesday night and spent an hour and half ($40) doing algebra with her and she killed that test.
Several times since, when she has had a maths test coming up, Mimi has said, 'Hey dad, can we get that old guy to come around?' I keep saying, 'He's my age.' She says, ' I know'.
Scott