A few months ago, Elder Neal L Andersen challenged the youth to take their own names to the temple (I first heard about this on LDS Media Talk). Right away an official page was setup, and word started to spread. So far over 20,000 people have signed up to accept the challenge.
Our stake hasn’t set a specific goal, but we certainly endorse the challenge. In one ward I was in recently, the youth Sunday School class (only 3 youth) were in the Family History Centre learning how to index. It’s great to see the youth getting involved like that.