They show up properly for some TLDs, those that have a policy of not allowing confusing/pointless characters. Far as I can tell though, you can't register names like the following (due to TLD restrictions).
http://☁→❄→☃→☀→☺→☂→☹→✝.org/
less allows you to stop and resume easily, without losing any of the output of your command (useful if you are watching the output of a process as well). Also less doesn't clutter the scrollback of your terminal with output from tail.
Thinking you have a secure connection when you don't is worse. On (generic hostile network), thinking you can check your mail safely is worse than knowing you can't.
I find the view that kids are incapable of making decisions a little strange. Yes, at a young age people are more inclined to get talked into something they don't really want to do, but this is often an important lesson in itself. Youth is also a time when the majority of experiences are new, and the age when children are first exposed to drugs (nicotine and alcohol included) is also around the age when they begin to make their own decisions.
Personally, I know that lots of the things I did at 16-18 turned out to be a bad idea. That is kinda the point. If at 16 you skip work/school to socialize you might get fired and lose your beer money, do that at 30 you might get fired and lose your house. I'd say the same applies to kids and their exposure to drugs, learning while there are fewer consequences is the point of youth.
Deciding to make it public how much you care about your users opinions of you advertising might convince a few people to turn off AdBlock. Reddit already has a reasonable number of free/unsold ad spaces.