Facebook appears to let you list only a single website or blog on your profile page.
Of course, many people have a website and a blog, and loads of us have connections with multiple websites and/or blogs.
With this simple trick you can list multiple sites on your Facebook profile page: Simply list the URLs for multiple sites in the Website textbox and separate them with a comma. They will display properly as separate links on your Profile page. Not sure if there is an upper limit, but I currently list 5 websites and blogs on my Facebook profile.
Previously posted on LawyerSuccessTips.com