I used to do this with a few posts from my old band's page on occasion. It does increase the amount of views the posts get but I think it depends greatly on what it is you're trying toi promote. Gaming videos for example aren't very successful in generating those views of the post into views of the video as most people aren't interested in gaming videos. If you were boosting say a post about a competition or something that you're confident will generate a lot of interest then I'd say go for it. But I guess it also depends on how much money you're willing to put into promotion. You've also got to be aware of how much it might be worth it. I've promoted a new song release before, spent £10 boosting the post which generated a few thousand views of the post but only around 20-30 listens of the track. (£20 for 30 listens...not really worth it). If you had loads of money behind you and are willing to take the financial hit to get started or you already have a large following, that boost can multiply the overall spread if that makes any sense? (Probably going off on a tangent here), but say for example you have 100 subscribers/followers, and that boost generates an extra 3 subscribers/followers compared to having 10,000 subscribers which could generate an extra 300 subscribers/follwers. Basically there are a lot of different factors to think about that all add to each other. Hope that makes sense and I'm not just talking out of my behind?