2100 BTC apparently. Or in other words 0.01% of all the coins there ever will be. There cannot be more than 10000 members ever and more realistically the number of members will slowly decrease over time from ~300 now to less than 100.
Im a member and i think theres way more than 300 of us
I believe the 300 refers to where 1000 BTC would roughly lie on a Pareto Distribution. It's quite an eye-opener when you do the maths. Gives a whole new meaning to the phrase 'This is Bitcoin' Sparta reference.