If you have an email ending in @hotmail.com, @live.com or @outlook.com (or any other Microsoft-related domain), please consider changing it to another email provider; Microsoft decided to instantly block the server's IP, so emails can't be sent to these addresses.
If you use an @yahoo.com email or any related Yahoo services, they have blocked us also due to "user complaints"
The sheer volume of Youtubers who are assholes.
This is just a general gripe, but ever since I started vlogging on Youtube I've really, really come to resent how so many people who are racist, sexist, or otherwise generally prejudiced jackoffs get so popular on Youtube. I can think of some exceptions like Ryan Wiley, SequesterZone, TheTruePooka, Steve Shives, ToolTime9901, and Cameron Watt (A.K.A. Libtertarian Socialist Rants), but generally speaking Youtube vloggers who talk about social issues have a tendency to be assholes and it bugs me how popular they are. Not that I think that makes them any more right, I'm just annoyed that they attract so many followers.
There also tends to be a lot of overlap with the Youtube Atheist "community", for lack of a better term, for reasons I can't really imagine.