Call screener An "industry vet" stated, "At the very least you can catch 90 percent of them by getting their number and calling them back, generally they freak or give you a phony phone number." Other techniques described "include grilling the caller on little known facts about the situation or organization they claim to represent." Prank callers don't always get through: Although the names of most call screeners never make it on the air, there are a few notable screeners that are major characters on their shows. Many live call-in radio shows do not like alternative or adverse opinions to be aired,
National Do Not Call Registry President Bush signed a bill authorizing the no-call list to go ahead in September 2003. Finally, the United States Court of Appeals for the Tenth Circuit on February 17, 2004, upheld the constitutionality of the law. Placing one's number on the National Do Not Call Registry will stop some, but not all, unsolicited calls. The following are exceptions granted by existing laws and regulations—and these types of organizations can register with donotcall.gov and can purchase telephone lists from the Do Not Call Registry Some attempts have been made by telemarketers to skirt the do-not-call list rules. An example is the