Whats the point in making friends on MyLot?

In a way they do, because your friends reply to your discussions. Your friends are the ones that receive email notifications of your discussions, or even if they don't (the option can be turned off) they can see them in the "discussions my friends started" link to the left. When one of your friends replies to one of your discussions, it will also bump up in your list of friend's discussions, so all your other friends will see it. So the more friends you have, the more chances of replies, which equals to better earnings. Very nice of myLot to set things up that way! :)