Xanga is a paid blog hosting service.
Originally Xanga was a free blog service. In 2013 they ran a fundraising campaign to make major changes to the platform, changing the backend to WordPress ("Xanga 2.0"). They announced that after the change to the platform, they would switch to a paid model.  They also announced that users could export their current posts. 
How to Export
As of 2016-08-27, you can export Xanga 1.0 posts in WordPress WXR format, which can be imported into any WordPress site.
- Log in at http://xanga.com
- Click "Archives" in the left column
- Click the link to download the archives.