Although I didn't watch the videos due to bad network and a bad phone battery too, I read through the post. And I must say, this is quite a brilliant idea to promote steem and steemit. I would also like to add that because of the diversity of cultures and races in the world, you could go ahead to select steemit vloggers from various part of the world who could talk about their experience on steemit just as @tomasgeorge would be doing. For one, we have @paolajane who is from puerto rico, @sweetsssj who, though writes more than speaks, could pull a lot of influence in the Asian part etc.
And then, language might likely be an odd here as not everybody can communicate well in English. Hence, it should be stressed that Steemit accommodates other languages just as it accommodates nsfw posts. This will excite people and bring in a large influx of steemians. And then, the part where you just get to invest in steem and watch your investments yield is also a good mention to incite the large populace of businessmen and women within the cosmos.
Altogether, this is indeed a great idea. Looking forward to viewing the ads.