They are using some app called "Red Facebook" "Green Facebook" and start Spamming. We are taking immediate steps to remove those domains.
Those domains use conditional UI. In some cases it looks like this.
http://i.imgur.com/EJjavUY.jpg
If you come accross any such co.vu domains spamming please report us
http://codotvu.com/reportabuse
or reach us in facebook page
https://www.facebook.com/codotvu
Thank you
codotvu team