I work with a lot of freelancers, as a teacher and as a coach.
9 times out of 10, when I visit their blogs, Facebook pages and other social media pages, they had nothing to say today, or yesterday, or last week.
This is a problem.
A few years ago, when most freelance websites were simply a collection of static, evergreen pages, you could get away without adding much to your site. But not any more.
If you have a blog, you need to post something more often than once every couple of weeks. If you have a Facebook page or a Google+ page, you need to be active on a daily basis.
