Are there any freelance services that provide you with a team of freelancers rather than let you to deal with individuals directly. Basically, I don't want to micromanage people: write an article here, put this link into your signature, read this site from time to time and when something changes do this and that. I would rather prefer to talk to a team leader, explain to him once what I want in general terms and let him take care of details. May be it is not called freelancing at this point but hiring a marketing company or even an employee ?
Depends on the type of freelancing you're looking for. If you could be more specific, you might get some responses. You might try looking in the freelance directories where you'll find not only individuals but oftentimes small companies that will provide the full range of services you need.