We follow, we tweet, we like (unfortunately we can't dislike). We check-in to places, unfollow and favourite. Nowadays much of our valuable time is spent on publishing incongruent snippets of our emotional state and personal opinions on Social Media networks. Reality is none of the above will get us anywhere and on the contrary might diminish our chances of getting ourselves the jobs we really want.

Reality number two is that prospective employers are very likely to check you out on Social Networks during the application process.

You really have two options to deal with it:

Make all your interactions on Twitter, Facebook, Pinterest, etc private.
Use all your preferred channels to your advantage and stand out from the other applicants.
Choose option 1 if you're more of a social media socialite (and slightly opinionated), but use option 2 if you think your presence adds value to your plain text CV. Here are a few tips how:

Get a LinkedIn profile and list your work experience, qualifications, awards and any social media channels that can aid your application. LinkedIn is one of the most commonly used tools for companies and recruiters alike to source potential candidates.
Pinterest is a great visual tool for displaying your creativity and is excellent for showcasing your ideas and concepts. If you want to find employment in a creative role such as interior design, fashion, advertising or architecture chances are you will be required to put together mood boards. So why not exhibit your talents here.
Want to be a writer, journalist, graphic designer or work in business? Document your work, progress and achievements in a blog (WordPress, Blogger, Tumblr are the most popular ones). If you're interested in working in a particular industry make your blog relevant by reviewing gigs you have attended, films you have watched, projects you have worked on, and so on.
Interact with people you professionally admire on Twitter by commenting on work or studies they have recently published or ask them to review your own work. Don't forget that Twitter can work as a dialogue if you use it correctly. Listen to what others have to say and don't push people for feedback as you'll just end up pestering them.
Facebook is a tricky one in the way that it is never going to give you the same chances of actually getting a job like LinkedIn. What you can do is actively engage in discussion groups relevant to your dream job or mention in your status that you're looking for a job. Your friends/family can share the message. Generally, we would suggest keeping your Facebook for personal socialising only.
The main rule really is when in doubt, make it private. That way you won't diminish your chances of getting your dream job or apprenticeship. Also be considerate of what you say on Social Media as it might spread further than you want it to. On most occasions it is really helpful to think twice.