Domain slamming (also known as unauthorized transfers or domain name registration scams) is a scam in which the offending domain name registrar attempts to trick domain owners into switching from their existing registrar to theirs, under the pretense that the customer is simply renewing their subscription to their current registrar. The term derives from telephone slamming.

Domain Registry Of America: Scam Alert!

http://en.wikipedia.org/wiki/Domain_name_scams

http://www.jvfconsulting.com/blog/138/Domain_Registry_Of_America_Scam_Alert.html