I've always believed that you need to be very particular with where you spend your limited social networking time.
Many use Facebook because it's easy, big and our friends and family are there. But is it the best place to spend your time and become known for the value you bring to the market.
Here is a good inforgraphic that might help.
Source Social Barrel
Social Media Today also provides some really good information using this same infographic
Reading this Article will be worth your time... http://socialmediatoday.com/brianna5mith/1648356/how-choose-most-ef...
Take the time to read both as it will be time well invested.