If you expect every unexplained link to be a screamer, you've got a sad life on the internet.
This is the internet. Either way, giving some indication of what you're posting a link to is just common courtesy so that people know what they're getting into rather than making a topic that just says "Go to this link over here that I won't tell you what it is but trust me!".
I posted this on a pokemon board with the tag line 'well, let the rage commence'. Now that would hint that something pokemon-related would be viewed in the link provided that would lead to various bouts of anger and negative criticism. If you expect it to be a swf of Jack the Killer's face flashing while hearing a loud deafening scream in the background, that's just your bad luck.
You done trying to justify your lack of courtesy?
As soon as you're done giving me crap about posting something that's old and having paranoid feelings over a youtube link.
Yeah, I'm about done.
My NIDOKING brings all the boys to the yard: http://goo.gl/ExAoe