There are hundreds of social media sites out there - more being added each week but the main contenders have to be Twitter, Facebook and for business users - LinkedIn.
Social media has really taken off in the last couple of years with everyone from Stephen Fry to Barack Obama being on Twitter these days and companies as well as individuals using Facebook to spread the word.
News tends to hit social media before it gets anywhere near a news desk as it's such an instant means of communication that can spread the message around the world like wildfire.
It's a great way of opening up the world and being able to communicate with people who you've either lost touch with or who you wouldn't normally meet.
Many people see it as an essential business tool - others see it as a complete waste of time and full of inane drivel.
It can be both - it very much depends on how and why you use it and of course who you follow or 'like'.
Be selective - you really don't need to be on every social media site to make it work for you. Choose the one's you enjoy, that make sense for you and that work for what you want to achieve. Besides the fact that there just aren't enough hours in the day to be on every one - they all have their pros and cons.
Set aside time for your social media - a few minutes every day on your main sites and a few minutes every week on your secondary sites.
If you want to join in the social media buzz there are events happening live offline and online all around the world. http://socialmediaweek.org/
Image via Wikipedia