This is huge, and it's going to change the way the internet works forever.
Probably not for the better though. The truth is people don't always "like" the best content. People like things they agree with, things that are easy, often the things they like are the most dumbed down version of good content.
This will not improve the quality of content on the internet. This is going to kill it.
If you run a content site, consider writing at a fourth grade level and only expressing the opinions most likely to be agreed with by the majority. It's the only way to survive in the environment that's about to be created.
This by the way, is the same environment that makes Dancing with the Stars the #1 show on television.
The internet is about to be dominated by the content equivalent of Dancing with the Stars.