I suspect that was a typo in the discussion that was featured, and I'm not sure that the staff here want to be editing posts for spelling and grammar mistakes just because the thread will be a featured discussion...
On the other hand, it could make the index page look unprofessional and give prospective members a lower opinion of the site.
no it's not a typo in the topic. And you could've seen that by just following the link. If it was I would've changed it but we need an admin (I think) to change this.