Congratulations, such a great invention! I would be happy if teenage girls learned about this amazing product and see it as choice number 1 instead of cotton tampons. Information and knowledge spreads through the school system and some bloggers :)
According to me, there's only advantages to not have to use tampons and pads. I convice all my female friends to try a menstraul cup cause it's simply the best!
I have only used it during one period so far and I'm sold! Don't need to think about it, so nice to go and do what one wants and to not constantly have to think about if you have tampons with you etc... I love my cup!