Sort:  

When you open an account on the Steem blockchain, your account is already filled with some STEEM, so you can trade from the first day. This is paid from a special fund and the value of it is set up by witnesses. You can have a look at this at https://steemd.com/witnesses

oh really , that is something totally new from me, let me check it

@dragosroua .1 steem is given to a new user by the witnesses? sorry, I'm just confused.

New users get some free STEEM POWER, 10% of that can be traded after doing 7 day long power down process...
You can't post or comment if you don't have any STEEM POWER, every user has limited bandwidth that directly depends on previously mentioned STEEM POWER