Radioio

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radioio (read as "radio i/o") is one of the worlds largest Internet radio services. It was started in 1999 by Michael R. Roe, known to listeners as the "radioioGuy". In November of 2005, it became the worlds first publicly traded internet radio operation through a reverse merger with Tampa, FL based powerCerv Corporation in which was formed ioWorldMedia,inc., ticker symbol iwdm.pk. As of February 2007, radioio's service broadcasts 23 ad-supported free streams, most or all of which are available through the iTunes radio service as well as through windowsMedia.com, shoutcast.com, and real.com. Ad-free subscription streams are also available for a fee.

As of January 2007, according to webcastmetrics, a third party monitoring service owned and operated by andomedia, radioio's total monthly listenership now exceeds 1 million listeners - with over 4.2 million "tune-ins" per month.

The individual stations that make up the radioio service are individually programmed by DJs known as "stream hosts". Streams are available in most common streaming formats, including MP3, Windows Media, and RealAudio.