I joined skillpages in june and it's been quite good. It works a bit like Thumbtack does. I used it to hire a painter for my flat and also a cleaner who comes once a month to give my place a good cleaning. I haven't witnessed any email problems as noted below, but i do see an option to invite contacts. I presume if u press this, it will email them like linkedin do, but i dont know.
They are probably a 3 or 4 star as it's not great yet, but it is near enough as good as the others for finding local people to do work