Yes, I know. There's a fine line...
But, as anybody who's used the internet for a few years knows, there's ways to screw somebody over abusing something like this.
Email bombing, threats, spamming, even hacking attempts are all the kind of thing that too many people take lightly as legitimate tactics against the unsuspecting these days. This just helps to encourage such behavior.
If you put a link on a very popular site and say along the lines of "Ha ha, look at these idiots, everybody knows what to do, go pay them a visit
" you're bound to have problems.
I just think by now most webmasters should know better, and they do it out of mean-spiritedness more than anything.
It's just one step above posting somebody's IP or email and saying "do what you will with this information."
It's true, some people consider being "slashdotted" once to be something of an honor, but it can get expensive if you're not a powerful or wealthy server. But it's too easy a "revenge" tactic, and people justify it because they think the websites are stupid and deserve to die. These sites know that they're doing, they can just shift the blame to others.