Over the past year, the weekly internet radio audience has increased 50 percent, with 12 percent of Americans over the age of 12 having listened to internet radio in the week prior to having been asked - a 50 percent increase over last year's 8 percent, according to a study by Arbitron/Edison Media Research, writes Radio Ink (via MediaBuyerPlanner).

As for the prime audience age 18-34, nearly one in five had listened to the radio over the web in the previous week, helping give internet radio a 16 percent reach among this prime demo.

Also, suggesting that the usage of internet streaming as a way to increase an AM/FM station's reach may be in vain, only 19 percent of those online have ever listened to their favorite AM/FM radio station via the web. Though this is up from last year's 15 percent.