Google has changed the commenting system on YouTube so that you need to be a Google Plus user to post; the new system uses algorithms to promote some comments above others, and has the perverse effect of making trolls more visible. Vi Hart, the incomparable math-vlogger (and a regular favorite around here) describes how Google's decision to double down on its flagging Facebook-alike G+ service by ramming YouTube users into it has made her lose faith in the service: now her regular, good commenters comments hover at the bottom of the pile, while hateful trolls whose messages generate a lot of replies are judged "good" by G+ and promoted to the top.
The promise of G+ in the beginning was that making people use their real names would incentivize them to behave themselves. It's abundantly clear now that there are more than enough people who are willing to be jerks under their real names. In the meantime, people who have good reason not to post under their own names — vulnerable people, whistleblowers, others — are now fully on display to those sociopaths who are only too happy to press the attack with or without anonymity.
Now even discussion is curated by Google, rewarding those who talk often, and promoting hateful inflammatory comments because they provoke responses. Taking all the collected data and computational power of Google and using it to optimally encourage people to watch advertisements and argue with each other is, in this author's opinion, brazenly unethical. We can only hope that everything that's happened in the last year has been unintentional and that Larry Page will have some sort of epiphany, pull out before the transformation is complete, and start putting the company's energy into doing good things again, as in a heartwarming vampire holiday tale.
As for me, I'll continue posting on my own RSS-enabled site and making my videos available as torrents, and maybe I'll follow in the footsteps of the many other prominent YouTubers who are moving discussion of their videos off YouTube.