AndoMedia has released May Webcast Metrics audience data for the stations and networks that it measures.
In their press release, AndoMedia states that most stations saw 1 to 2% declines in listening for the month from April stats. Actually, Clear Channel and CBSRADIO saw much greater declines than that – over 10% of their domestic numbers. This *could* be explained in part by the fact that – as my friend Kurt Hanson figured out – most streams have higher listening on weekdays than weekends or holidays. April was 73% weekdays; May was only 65% weekdays. This, says Hanson, accounts for 5% of the drop. The rest, he continues, could be an indicator that “listening to simulcasts of terrestrial stations online does not seem to be growing in 2010.”
Pandora continues to grow its audience: its domestic-only AAS grew very slightly, but the service gained almost 14.5 million session starts. This may indicate that a lot of folks are visiting but not necessarily staying with Pandora for very long, which wouldn’t be too surprising based on the enormous buzz and sampling that they are getting via iPhone apps and such.
The press release and ranker are here..