So I've been online for over 30 years now and literally every community I've been a part of with over 1000 members eventually has someone build basically this exact same thing. It's about as original and unique as starting a t-shirt business or a discount card for students.

As for your claims that people like it because lots of people were using it, you are being ignorant. People in the community refresh on sites like this/flock to them because of fear. They are afraid of what people are saying about themselves and their friends.

I guarantee if you actually polled users you'd find the vast vast majority of them would wish the site didn't exist. Usage != Support.

It's not like people do not make this kind of websites because it's challenging technically (it's trivial) or because they did not think of it. They don't because it's shitty idea.