I find this deeply frustrating and I wonder why they were hiding this from us until now.
What!? This is a well known feature reported i many trading sites
This and other features make of the Bitcoin a very bad cryptocurrency for daily use and a very good long-term investment asset. More bitcoins you detain and less there are in the market and so your own accumulating process will make the price to go high. A very good and interesting virtue circle eh? :)
I will tell you something more. 21mln is the maximum theoretical number of circulating bitcoins. Of course this number will be never reach and more the time passes and less bitcoins will be available. Why? Just think at some bitcoins in a usb key that you heedlessly put in the washing machine, they will be lost for-ever!!! Every time a private key will be lost it will be... forever!!