You don’t want to sign up to every social media network out there because it would be very difficult to manage all of them and grow them. Some social media networks are more beneficial to your brand or business than others. As a rule of thumb, you should always sign up for a Facebook, Twitter, Google+ and Youtube account even if you don’t plan on using all of them. This is so that no one else takes your brand name on the major social media networks. For the other social media networks, it all depends on your industry. For instance, if your business is geared towards women, you might want to sign up for Pinterest. Tumblr is a good way to reach other bloggers with great content. Instagram is perfect for sharing photos. Which ever you decide to choose, make sure you focus only on the ones that makes sense and will drive your brand forward.