Grandmothers on Facebook

I'm not a grandmother yet but I'm sure most of the women I went to elementary school and high school with are. With only 10% of people in my demographic group on facebook and with most women in my day changing their last name when they married, it is really difficult to connect with old classmates.
I've been getting pictures posted by moms in my hometown of their "cutest kids" competition. So far none of the cutest kids pictures have also included grandparents Well I've decided that I'm just going to have to convince the moms to get the grandmas into a "cutest grandkids" competition so the grandmothers will start social networking. Hope it works.
I can't think of a faster way of getting a major network of 50 something facebook members than providing an outlet where it's socially encouraged to haul out pics of the grandkids.