It is considered bad forum etiquette to spam the same message in different threads. Please don't do this.
Now...about your information. RLC will quickly realize people are doing what you suggested and take steps to counter your tactic.
If I...as a subscriber...log on at my home computer, they have a record of my ISP. If I log in on my friend's computer at his house, they have a record of that ISP as well. In my case, there is no problem because most of my logins are from one ISP. But if a group of people use your tactic, they will see a whole bunch of ISP's from widely different locations. They won't like that.
Now, they might be nice and send the subscriber an email telling them to stop. Or they might just ban the account with no warning. Would you, as the subscriber, want to lose your money like that?
I wouldn't.