Audio streamers that are hawking their ad-supported tiers are doing much shorter but more frequent commercial interruptions than radio streamers. What really needs to be studied is whether ratings really get a boost from fewer but longer stopsets these days as listening habits have changed. Maybe if 16 minutes an hour were broken down differently, they might be more effective for both listeners and advertisers. Limit stopsets to two or three minutes and max at 12 minutes per hour. Get the same revenue by selling the idea that ads will be more prominent and effective because they won't get lost in an 8-minute stopset. Then everybody wins - listeners and advertisers. Considering the average length of songs, you need to do about one minute of advertising for every song if you're going to do 12 minutes an hour. That's still a lot of interruption. Pick your formula - one song, one minute, two songs, two minutes, three songs, three minutes, etc. It's either that or you have to jack up advertising rates in order to reduce interruptions.