"1-800-NEW-DIAL"

I'll bet you intuitively 'knew' this already, but now there's new research to prove it: memorable phone numbers make radio more effective.

According to a recent study, Toll-free Numbers in Radio Advertising, listeners are more likely to respond to a radio ad that lists a vanity 800 phone number (e.g. 800-NEW-CARS) than an ad with a numeric toll-free number.