Am going to show you how you can custom domain your blog url. For example, www.moderngenious.blogspot.com to www.moderngenious.com. This only works in the new blogger beta. To set up your custom domain, just log into your blogger accounts. You can click one of these, edit post,comments,settings,Design,Monetize or Stats. After clicking look at the top of the blog and click on settings. look for publishishg below the settings bar and click on it. You will see a sign like that says
You're publishing on blogspot.com
Switch to: • Custom Domain (Point your own registered domain name to your blog)
click on custom domain and follow the instructions given to you on the page.