K-Pop last 28 days

What does the view and like graphic means?

It displays the last 5 days in Views (blue line) and lives (green line). It is a very useful tool to check if a video have started ad promotions: any big change in views always is accompanied by a similar change in likes. If likes continues its own trend and doesn't respond to a peak or fall in views, it means an ad campaing just started or ended respectivelly.

The View per like number will turn green if it is within normal values, yellow if it is elevated but considered normal, and red if it is too high and should mean an ad promotion. Very old videos might get high views per like because of its time.

For videos released in the last month, the server will automatically flag videos as being promoted. But for older videos, since a high view per like might happen normaly as it gets old, it won't.