hello steemians how are you i hope you fine.
now today i have a question in my mind what happen i f steemit and dtube introduce ads
and i request to owner introducing ads it is goo and you have lots of space for doing this see in this picture 
so as you see in this picture owner have place two ads on sides of writting section this would increase the earning option of steemit and its user also if dtube introduce ads it s would became good.
if demand and supply of steem is gone then what happen with your site and people starting leaving this site so this is good thing
it is good option to advertiser and very cheap rates also this targeted option.