The proportion of U.S. sports fans that follow games and teams on smartphones and tablets has grown from 21% to 35% since 2011. Twenty-three percent of them say they watch video via mobile devices. This growth is apparently coming at the expense of radio and print sports media consumption, according to a study released today. 

Sporting News Media has released the third edition of its annual survey of sports media consumption in the U.S., based on online surveys of one thousand U.S. adults.

The Internet, in fact, is easily the second-most popular way to consume sports content (behind television) -- "now considerably ahead of print" (to quote the Sporting News press release) which, along with radio, has declined in usage for sports in the last two years.

See Sporting News' infographic based on the study's findings here. The press release is here. (h/t to Tom Taylor Now, who also reports on this study today)

Fast Company reports on the launch of "Radio Stream," a new product designed to allow local AM/FM broadcasters to insert targeted ads into their online and mobile streams, along with online couponing and social media integration.

The new product, which uses Apple's HTTP Live Streaming Protocol, is intended for "local radio stations wishing to air Pandora- and Spotify-style targeted ads," says Fast Company.

Radio Stream is made by mDialog, which has (so far) specialized in video advertising.

Fast Company's coverage is here.

The Echo Nest has introduced a new blog called "Musical Identity," with which they plan to regularly share the insights they accumulate by recording how listeners interact with music online.

A "music intelligence" company, The Echo Nest provides to clients an enormous stockpile of information about music -- over a trillion data points on more than 30 million songs -- based on how people listen, purchase, write about, and interact with music.

"We plan to present a series of data-based posts examining music fans from different angles. We’re hoping this will be interesting, and possibly even amusing, but it’s also a way for us to expose the depth of our understanding of not only music, but music fans too," The Echo Nest wrote to introduce the blog.

One of the purposes, by the way, of compiling this data -- and the first topic of the new blog -- deals with "cross-media understanding." In today's case: how a person's "musical identity" predicts taste in movies, and vice-versa. Read that here.