I thought of a few things.

[Dimentio]

On some other sites they have things were you can review the person, Like give them feedback or there was 3 options, Negetive, Happy, Nuetral (Not sure how two of them are spelt!) I thought this would be good for here ha ha.
Also it took me like an hour how to make a Blog, And when i did make one, I accidentally deleted it with another one! So i think there should be a button on your page saying, "Make Blog!" Then next to the Blog "Make new Blog!" I think it is there but as i am a bit slow, I most likely did not notice it ha ha.
One more thing i have noticed is that on peoples pages, It does not show their age, Well on other sites i have been talking to someone, They say their age to me, Then on their page it says something different, So it gives you an idea not to trust them as much, So as this is a site for teens, I think that is quite needed for all the adults who come on here and lie about their age!

[Jess]

the feedback - there's a rep button. look at the balance scale on the left, next to the report button

as for the age thing, some people don't want to give away their age or show them. That's their choice.

You're right in saying that there might be adults on here that lied about their age, but we don't know who have done that. all you need to do is be careful about giving away your personal information. This is the internet, it's easy to lie

[Ben4ever]

People can lie while making there account!

[Jess]

People can lie while making there account!

true but as I said before, this is the internet. just don't give away any personal info