There is a finite amount of Ripple tokens (XRPs). If I recall correctly the amount is 100 billion XRPs.
Opening an account requires 200 XRPs.
So, are there only enough for 1/2 billion accounts, ever? Can the numbers be tweaked later on? Could XRPs be divided below 1 XRP?
Was this problem discussed anywhere? (E.g. on the Ripple forums)