Steemit inc selling or not means nothing unless they are selling their STEEM to Google to make Google pay in STEEM for ad space..

Ok. Let me spell it out as clearly as I can. Until Steemit Inc started selling ad space on steemit.com, its only source of fiat was auto-selling STEEM. But it has had fiat expenses during the whole of its existence. Those expenses include paying developers to develop the blockchain code and paying for the running of an RPC node. All that costs Steemit Inc dollars. Now that Steemit Inc has another source of fiat apart from selling liquidating and selling its stake, it is not forced to sell as much STEEM as before. That means that there is more buying pressure relative to selling pressure on STEEM and it hardly takes a Nobel prize in economics to realize what that means for the price.

eventually I would be expecting Google to purchase their own STEEM ..or to burn STEEM for ad space. However if Steemitinc is just collecting from Google so they can get richer while maintaining their SP and STEEM then that's double dipping and a whole different monster

By maintaining its SP and liquid STEEM as in not selling it Steemit Inc is supporting the price of STEEM which, surely, is in the interest of every single holder of SP in existence.