Originally Posted by Snake Doctor

xsells don't really make you more money, they just allow you to make more money upfront.
If a person signs up for two or three memberships simultaneously, it's a reach to think that they're going to stay a member of all 3 sites for a long period of time.
Generally speaking for every $1 you make from a cross sell you lose $1 in retention, so it's a wash over time but it allows you to make more money right now as opposed to over time.

This is why it's a ripoff for a revshare program to have xsells on the signup page and why you should never promote a revshare program that has them.