A few months ago i made a test. I wanted to get as much subscriber as possible in just 1 week. My niche was "Vine Compilations". I uploaded 5 videos and used the unlisted method to rank them. I bought 5 K HR Views for each video. At the begining i just got a few subscribers each day (about 50). But after i uploaded more and more videos i got about 500-1000 subscribers each day. I realized the more videos i uploaded the more subscribers i get. Not because more videos means more views and that means more subscribers. No, i mean i got more subscribers from each video than i got before. I also realized that just about 10% of the new subscribers subscribed trhough the video. That means the viewers subscribed through the channel page. Thats also a possbile explanation for the increase of daily subscribers for each video. Because if a viewer is interested in subscribing and goes to the channel page but theres just 1 video uploaded he won't subscribe, because people don't want to subscribe to a channel that has just 1 or a few videos uploaded. The possible subscriber needs to be convinced that the channel is going to continue to upload quality content which has at least the same quality as the video that made the viewer think about subscribing. So after 1 week i managed to get about 2600 Subscribers with just 5 Videos. And i got over 1 Million views just in 1 week with 0 subcribers. But sadly every single video i uploaded got flagged because of copyright problems. If u want to start producing funny vines i recommend you to start uploading them to youtube with unlisted method, because the funny part was just if you have a good thumbnail you are able to generate thousand and even up to million views just with a few HR-Views