It seems like it's a new social media platform, basically like Facebook.
Here's a little something from their "about" page.
"Oonfun is a pure entertainment website to connect people across the world. It is an online social media websites offering social networking service based in Pakistan. Oonfun was launched on 14 may 2016 by Asad Jutt along Online Social networking Company. At beginning, the website membership was limited for a specific region but now it is extended for everyone to become the member to enjoy a social network across the world."
I've never heard of it before and stumbled upon this by pure accident. Seems to me like a poor copy of Facebook, and based in Pakistan.. - I mean, I don't want to be like that, but an entire social media from someone who lives in Pakistan. - That just doesn't feel right.
Here's something else from their "about" page.
" There is no membership fee is applicable to access the website but it’s free of cost and access from everywhere in the world."
I'm from Sweden and I have issues with grammar and things too, but seriously.. That looks awful.