What is the ruling on participating in a multi-level marketing company that sells hosting services and domain spaces, and the participant earns commissions for inviting others to subscribe, with their profit increasing as the network of invitees expands?

The described scenario is one of the prohibited forms of network marketing (pyramid scheme) due to its elements of gharar (uncertainty/deception) and qimar (gambling), and consuming people's wealth unjustly. Therefore, it is not permissible to participate in that company under this system.