Use the link to delete your account. Otherwise, try this link: http://www.xing.com/app/help?op=show;id=185
URLS:
http://www.xing.com
http://www.xing.com/app/user?op=cancel
Please note that AccountKiller.com is not associated with the business listed on this page. AccountKiller provides easy-to-understand instructions and guides on how to cancel charges and relationships from the list of businesses on our site, we have no affiliation with these businesses.
Doesn’t work, just takes me to my dashboard.