Question on website

Assalamu Alaikum.

We have launched a social networking website "www.nettomoney.com". We are taking $10 membership fee and if anybody can bring member in his network, then he will get referral fee. For 1st level member in his network, he will get $4 and for 2nd level $2, for 3rd level $1 and so on. Also we are providing some social networking features like messages, photo album sharing etc. For more information please visit www.nettomoney.com.

The major part of the $10 membership fee we are distributing among the members.

So please let us know if is there any issues in our business not shariyah complaint?

We want to do our business within the shariyah.