Booboostwo - I disagree.... I have recently let DD (nearly 11) get this app. She wanted musically a few years ago, and I downloaded it for her and was horrified. So she didnt get that. Now, a lot of her friends have it, and she loves doing music videos, has singing lessons, performs on stage.
I said she could have it on the understanding that she has a private account, so mean girls at school cant access it. She only has 6 friends on it - all from her school that she plays with, and she follows a few youtubers and people she likes online that post things about her cats.
There is a lot of girls in DD school that use it, and some of them have the most awful nick names like - XXX the slag.... XXX the ho ! That made me
. I havent watched those girls feed, but my daughters feed and her friends and full of them dancing, singing, filming their pets, etc. No sexual pouting and posing at all. I have told her what my boundaries for this are, Ie no DM, no being friends with people she doesnt know, no following anyone without me checking first. She also knows if she gets any messages she needs to show me.
I think the technology is out there and the older they get the more they are going to want to access it. Your job isnt to ban them outright (because even if you do - how do you know they wont be on it at a friends house?), but to encourage them to talk to you and agree boundaries.