I've attempted a couple advertising campaigns on Facebook and Yelp, but after $250 on Yelp and $20 on Facebook I have nothing to show for it. What can I do to get more clients? I specifically do IT contracting.
The standard approach of picking up jobs online, coupled with some good linkedin will serve you well.
Also, general networking and industry conferences are a great way to meet other people in your field or looking for people in your field.