Being a professional blogger is far more than being just a blog writer.  When professional blogging, it is required that a blogger be a technologist, a social media manager, a reader,a marketer, and a networker.  You have to have a little knowledge about PR in addition to all the other duties. 

Many of our clients that have hired us to blog for them, have an expectation that the blogger will be doing more than just writing good quality content on the company.  They want the blogger to participate in the conversations going on in places like Facebook, Twitter, Pownce, Jaiku, and all the other places where people go to socialize.  This requires the blogger to know how to use these tools and know how to communicate by using these applications.

If you are a company hiring a blogger, please take the time to ask if they are well versed in the social mediasphere.  Sure they have a great writing style, and good grasp of English, spelling and grammar, but do they know how to set up a group in Facebook?  These are tools all bloggers need to know to be successful.