Which sites are essential for social media marketing?
Facebook, Twitter, LinkedIn and YouTube are the most trafficked social media sites. You don’t have to use all of these tools, but it’s helpful to at least set up a profile on all of them. Don’t get overwhelmed! Learn and implement one and a time, then focus on the one that has the highest return on investment for your business.

How can I save time when marketing on social media?
Preschedule your status updates and use tools that can update multiple social media properties at once. My favorite free tool for doing this is HootSuite.com. But watch out for terminology that’s specific to one social network. For example, it can be confusing to post a status update that uses mentions or hashtags (technology that’s specific to Twitter) on Facebook. So when you’re posting across networks, make sure your message works across all the different social media sites that you’re posting to.

Which social media site should I spend the most time on?
The social media site that most of your prospects are on is the best one for you. In the begining, you will need to experiment with different sites. The great thing about social media is that you can track – exactly where your clicks are coming from, which site is sending you the highest-converting traffic, etc. So it really takes the guesswork out of seeing which site is most effective for you.