I personally consider jerrybanfield a good proof of Steem quality, since he was on the internet business for quite a long time. I think it's interesting to see people like McAfee and other known names using or tranding steem, because it gives more value to the plattform, especially for those who doesn't know it... Anyway I just hope that if some famous people comes, like actors or so, they won't catch all the attention and kind of ruin the great community we have now on Steemit. I do understand @andrewdemeter, things seems to change so fast in crypto's world, anyway I personally believe in Steemit's great idea and plattform. Though I do consider an advice I found in a very wise guide on investements: "do not invest what you are not disposed to loose..."