I'm pretty sure, that YouTube also freezes videos, because of unnaturally, and dramatically increasing of views on a brand-new video. But who knows, how many views in a hour safe are? I'm not talking about Proxy views, Real views which look at least a few seconds on your video. I need to get as many as possible, otherwise with only about 200 views an hour, 4800 a day, It needs to be spreaded over different videos. Spreaded over about 10 videos, you can get then with 200 views a hour, about 50k a day...that's anyway not bad. And you have the positive fact, that you can create 10 different keyword optimized videos, and see which one works best.