Facebook and twitter are two of them. This is a chance to get ppl in your network and socialize with you. Then you can introduce your site to them...basically advertising your site w/out spamming.
Social media marketing is utilizing social networking and user-generated content platforms to promote a product, service or content. It's when you interact socially with people. It can be twitter, facebook, linkedin etc.
basically promoting your site with social media/netowrking sites like youtube, facebook, twitter, linkedin, etc
Social media marketing means that you are marketing your site through social networking sites. Here you connect to people . make your connection grow professionally as well as socially , so that more and more people will come to know aboutyour product . Social media will not double your revenue overnight.. it is a slow process. Sites like facebook , twitter , eZdia , linkedin helps you much in this
Not exactly the best way to gain backlinks... but it can help with persistence and sharing of links with a multitude of different outlets with social news/media/bookmarking!
Social Media Marketing is like all other marketing a tool to reach your potential customers where they are! Social media marketing and social media advertising is two similar but different things. Social Media has a great advantage when it comes to user generated marketing. This thing I always try to accomplish is free "viral" marketing - user driven marketing (engaged users commenting, recommending, fans and followers)