I have a free account (still just testing the service and haven't made my decision whether or not I'll stick with it). To my understanding the free account means I get to look at ads and supporters and mentors don't get ads. I haven't seen a single ad that isn't your own. Why "waste" this ad-space with ads that don't create revenues? If you'd have third party ads bringing you revenues all the account types would help in paying the costs of keeping Roll20 up and running and making it better. It was said somewhere that Roll20 got 100 000 users way faster than you (the devs) ever hoped but still the bar here <a href="https://app.roll20.net/account/supporter/?minbarmain" rel="nofollow">https://app.roll20.net/account/supporter/?minbarmain</a> isn't even close to the second checkpoint which I'm assuming is the point where Roll20 can be sustained and improved from here to eternity and I would assume this it the goal for everyone. Revenues from ads could help getting there significantly.