Many businesses use one of more of the social media sites for marketing purposes. Some find it easy to market their business and get a lot of response from it where as others may struggle to build up a community or to know what to write.
When you do post anything on a social media site or indeed on your own website, be sure to spread it across all sites in order to get the most of out one article. You may want to reword it slightly, or just put snippets on the social media sites that click back to your website for the full article.
Before hiring a social media specialist, you need to educate yourself. This does not mean you need to become an expert in the subject, but you should at least know the basics. This will save time and money as your social media specialist will not have to take time to train you on this and there may be some parts that you can do yourself and leave the more technical items to the specialist. As well as this, you may want to study the lingo used on the social media sites such as RT for retweet, Hashtags etc.