At the internet can be counted on for a measured, tasteful response:
alldeadmormonsarenowgay.com
You know, I don't think the baptism thing is as horrible as everyone's making it out to be...
...but I
still think that's hilarious.
EDIT:
Here's the thing though: by doing this, have they actually changed the Mormons' sexuality? Have they made them any less devout in their own beliefs, or any less eligible for their afterlife if they're actually (however unlikely) correct?
Or is this just inconsequential nonsense, which is exactly what I believe the Mormon practice to be?
The main difference is: the post-death Mormon baptism is done out of a genuine (though I believe misguided) concern for the souls of the deceased. That site, however funny of a point it makes, is done out of malice.
If we want to be a tolerant nation, we need to not be malicious towards harmless beliefs that we don't agree with. The ones that actually affect people (aka: the homosexuality thing) sure, but nonsensical inconsequential religious rituals? What does that do other than promote hatred between groups?