I had, in the recent past, written about a number of interesting customer segment focussed campaigns from Virgin. Here is yet another brilliant 
one from Virgin Mobile. The usage and application of the key insight - 'pester power' of kids, is what amazed me the most about this idea.
Virgin Mobile has come out with a parental enlightenment kit( www.enlightenmentkit.com) to help kids persuade their parents to buy a Virgin mobile!!
It has presentations (Download pressure_point.ppt) , stickers, posters, T-shirt messages, desktop wallpapers, email blasts to help kids do the job well!!
Lovely work and a great customer engagement idea.
Thro' adverblog