Pity this person wasn't one

I went to look at the national SF and Fantasy convention's site, only to find this in the first paragraph:

With a heavy emphasis on Steam Punk and Cosplay, the Convention never the less caiter's for the professional writers of Science Fiction.

Dude.

And I'll now vent about the highly paid new marketing person at work who puts apostrophes in all her plurals. All of them. So far I'm biting my tongue but I'm going to have to tell her at some point that I'll have to proof-read anything she wants to send outside the office. I'm just not sure how to go about that.

At least she's not doing it to verbs - so far.