Hi, I actually am just getting back into running after doing a lot of cycling after college. Ran a 14:47 5k this past spring. Am a 29:52 10k runner from college. Am based in DC/MD/VA
Where I come from you have to have vetting to make sure you don't have a criminal record and aren't on a list of people banned from working with children. I'm not even clear whether the OP is aiming his message at parents or the school kids themselves. Is he soliciting internet contact with kids without the parents' knowledge?
Also where I come from we would look pretty hard at someone whose twitter account show lots of live video of children (like the OP's does) - like did he get permission from the parents of all those children before posting them?
I have seen anonymous people posting jokes about pedophilia here. Personally I wouldn't pick this website to advertise my wares.