It's fine to start accounts with social media sites - it's fun to check them out and see what they can do for you - but when it comes to displaying the links on your page keep it simple.
I recommend using the top 2-5 that are most in line with your business and not mentioning the others. If you have one video on You Tube, leave it off. If you have a Flickr account you haven't used in a long time, leave it off for now. There's no need to display all your social media accounts. When I see websites like this, the site often looks too cluttered and less professional. Keeping your icons and links simple and relevant to your business is the most important.