Hi, thank you for question.
This was our initial idea, to sell all shares and then let members manipulate/control shares price and availability. If no one will sell shares back to system, the only way to buy shares is to buy from members at our shares market. Everything was towarded this point.
Hope members will like that they are now in full control.

To other question regarding InFrame Ads - 2lvl
That is just your level depending on your viewed ads. The more and the bigger levels you have on Daily Bonus module, the bigger your maximum prize can be, later when more prizes will be introduced, that will very much mean what additional prizes you can get.