Comscore released unduplicated audience size across mobile and desktop (US only for now) for the top 30 web properties/services.
Using the Comscore data and the fact that more than half of US wireless subscribers are using a smartphone I color coded the data (link to Google Doc) so you can see who is keeping up with the shift of attention to mobile.
- Green: Greater than 50% of your audience is on mobile e.g. Google and Pandora
- Yellow: Between 30% to 50% of your audience is on mobile e.g. NY Times
- Red: Less than 30% of your audience is on mobile e.g. Craigslist
Pandora, jumped into the top 30 US properties (previously #61) on the strength of their mobile audience.