Xanga allows you to control whether others can visit your site anonymously. With Xanga’s Footprint Lock, you can require anyone viewing their site to be both signed in and have Xanga Footprints activated. To activate Footprints Lock, go to the Privacy Preferences in Account Settings:

• http://www.xanga.com/private/editaccountprivacy.aspx

Then select "yes" for Footprints Lock and click Save Changes - that should do it!