Thanks for your reply. Talked with some more informed friends about the situation in Sweden and their conclusion is that work like TaskRabbit probably could exist in some kind of grey area (especially when it's one private individual working for another private individual for a small amount). However when the service grows the unions will try everything to make your workers "unionized" implying that either the service company (e.g. TaskRabbit) or the buyer needs to pay insurance and minimum-wage for the work being performed - basically hiring the individual.
I guess this is not interesting for must of you US readers but it could be telling of what could happen to your TaskRabbiters.
I guess this is not interesting for must of you US readers but it could be telling of what could happen to your TaskRabbiters.