If you want to have more than just another profile here’s a need little trick for if you want to post a website but not, Blog, Company web site, and the others like everyone else has on their profile.
Go to Profile >> Edit Profile >> at the website section click edit. In the boxes that appear choose the bottom one, “Others”. Because if you choose the bottom option you get an extra field so you can personalize the name. instead of Blog you can type My SharePoint Scrapbook or something more business-like.
My SharePoint Scrapbook 