The Daily Grind: Do you play the system in games to get more freebies?

I was chatting with a friend recently about the referral system in League of Legends, debating the wisdom (or lack thereof) of a player creating multiple accounts and playing them to level five in order to get referral rewards. The ease of getting free email addresses makes this a snap -- as long as you don't mind playing levels 1-5 over and over.

The argument we've both heard is that this is just how it works -- the developers know that this goes on and they don't mind. It set me to thinking. Whether it's creating multiple characters on every server in Dungeons and Dragons Online and Lord of the Rings Online to rack up Turbine Points, creating multiple email addresses to take advantage of referral programs, or any of the many other ways out there to get more freebies or save some cash, is there a line to what's acceptable? Does it vary with each person's personal comfort zone and the devs' willingness to look the other way or is there a definite list of things that no player should do? Hit the comment button and let us know what you think!