Hey i haven't been using social media sites for while now but one thing i am learning is how to get new clients in my own area through social media sites Facebook and Twitter. I hear a good way is to log onto facebook and do a search for someone who is a guru in their niche market and check the people who "Liked" that person or brand, then send these people a message regarding your web design/graphic design services. But as a web designer how are you supposed to find yourtarget market? Also i don't really know what to send potential clients as i'm sure they already get alot of spam and emails from businesses all the time. I want to be able to increase my facebook likes and Twitter followers but i am not sure where to begin?

Can you please explain in details what i can do to to get more clients in my area using facebook and twitter?