Much was already said in this thread, but until now, there is no many jobs offering $1 hourly for simple tasks. There is more people looking for jobs than people offering jobs. So it's hard for us to find services.
Yes, I do not see too any jobs offering $1 per hour but I think we can join freelancers job from where we can earn more than that per hour but all we need some specialized skills !
Truly freelance jobs were the best to earn good in terms of bitcoin. The risk factor is that it won't give a reliable earning similar to earning from signature campaign.