Session 5 – Audience metrics for portable devices: Answering the ‘who’ and ‘how many’ questions
This session at the Portable Media Expo looked at what kind of measurement of the audience was taking place. This was of particular interest to existing broadcasters (my perspective) and there were a number of established companies on the (rather large) panel:
Speakers: Dave Van Dyke - Bridge Ratings, Diane Williams - Arbitron, Mark Donovan - M:Metrics, John Federico, Audible.com, Peggy Miles - Intervox, Mark McCrery - Podtrac
Dave van Dyke kicked-off the session with news that research he’s carried out for Bridge ratings has concluded that radio stations can actually benefit from podcasting.
The study of used a sample of 4000 people, including 2000 listeners to non-commercial radio stations such as NPR. It was conducted between January and October 2005 in Los Angeles, San Francisco, Seattle, Washington, DC, St. Louis and Miami.
To quote from the press release: “Listeners to NPR and other non-commercial stations reflected a 5 percent increase in cume listening and generated 10% more time spent listening after regularly (2 or more times per week) downloading station podcasts.”
Bridge Ratings President Dave Van Dyke explains: "We had hoped that this technology would empower radio and this first-look study confirms that podcasting will impact listening and ratings."
Further research is expected, and more detail is yet to come out of this study – but it appears that the podcasts are helping build a stronger relationship with the audience: increasing the time spent listening live and improving recall of the station. Van Dyke has identified that a listeners need to be listening to two podcasts per week over a month for the relationship to develop.
Bridge Ratings is measuring podcasting through traditional interview techniques, this is because it is difficult to track down new media listeners. They ask about demographics, cumulative time listening, how people listen, do they forward files to friends or share them. Other techniques employed include the embedding of email questionnaires and they’re developing tracer cookies for PCs – which can directly track specific behaviour without having to interview respondents.
David van Dyke also showed a series of slides predicting that critical mass in podcasting will be reached by 2010. Currently there are about 5m people who’ve downloaded and listened to a podcast – optimistic estimates think this will be 75m by 2010 (the low end estimate is 40m). Existing broadcasters will play a large roll in driving this uptake – see the BBC podcast trial which is doing just this.
The other interesting statistic was that more people are listening on PCs than on portable devices – again the iPod is seen as key, but mobile phones and PCs could actually be more important.
The other interesting speaker from my perspective was Diane Williams of Arbitron. They’re currently using a diary system of measuring listening, as used by RAJAR in the UK. They’ve developed the personal people meter (PPM). It clips on and it picks up inaudible signal encoded into signal of whatever it is that you can hear and it knows what you’re listening to and when.
The interesting point is that in their trial which was carried out in Houston, the PPM has resulted in higher listening figures for radio, because it automatically recalls everything that people are listening-to, rather than relying on memory. We’re much more promiscuous listeners than we realise. Full findings of the trial, in PDF, are here.
Matt
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