10:52 pm - 10/15/2012
Gangnam Style out of the most viewed music chart due to YouTube changes
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YouTube changes search to rank based on how long users watch videos, not clicks
If you have been searching for any YouTube videos today, you may have been seeing the results of an update to how the website ranks content and determines what most closely matches what you're looking for. Google has announced that it is expanding changes introduced in August to how video discovery across all of search, so that videos get higher rankings based on how long viewers are engaged — not how many clicks a video gets. The difference is that videos that simply manage to attract a click through thanks to its title or preview but fail to keep users watching won't be promoted in search. In addition, the update to the algorithm will take into account how long users' overall YouTube visits are. This means that videos will get higher rankings if users not only watch it in its entirety, but if they continue on to stay on YouTube and watch more videos. The change is a logical one to focus on bringing users content that keeps them entertained and interested, while keeping them on YouTube. It also fits in well with Google's push to improve the relevancy of search results across the board.
Source: The Verge
The youtube music top 100 videos category works with a combination of algorithms that take into account clickthru and referral links along with views, comments and likes. Now it also includes time watched and time spent looking through related videos. Ganganm Style entered the top 100 at #15 on 2012/7/31 and dropped out on 2012/10/16. The changes went live on the week of 2012/10/12.
Here's the performance history on YT 100
2012/10/16 (dropped completely)→http://www.youtube.com/chart
What does this mean for Gangnam Style? People are not watching the whole video. This past week at least, most people that did watch it saw less than half of it. That's less than a minute fifteen seconds. While this doesn't affect total view counts, it lessens the search rankings.
What does this mean for your oppas and unnies? it'll be almost impossible to get them on the front page and reach a wider mainstream audience through the sheer force of your refresh views unless the track is actually popular, and view bots will have to find another way.
Source: Youtube creators blog
Source: creators blog "why we focus on watch time"