That's not improper, that's ingenious. Or it would've been if tags weren't visible

people or companies who want to look more popular as they are to get attention.

you can buy followers or tweets which go to hundred thousands of people.

http://www.ebay.com/sch/i.html?_trksid=p5197.m570.l1313&_nkw=twitter+followers&_sacat=0&_from=R40

They do and people also buy subscribes on youtube. Its a common thing these days.

has to be fake

Oh it's real, it's damn real. I made the screenshot myself, I can vouch for it's authenticity.

Link?

Those are legitimate methods of increasing views. Tags increase the ability for someone to find videos, not views. 

Actually the tags aren't visible ever since the new Youtube redesign. :D 
So there's no way for people to prove this is real anymore.

FAKE!

I'm calling fake too. You need to  right click, view page source and scroll down till you see key words. After a quick Google search by typing in the first paragraph in this screen shot brings up this video http://www.youtube.com/watch?v=u5BLgycbUog. By using the method I described you come up with these tags.  PlayStation 3, PlayStation Vita, PS3, Sly Cooper, Fat Princess, Killzone, Nathan Drake, Big Daddy, Kratos, Twisted Metal, LittleBigPlanet, Ratch. Plus if you think about it, why would the only tags be about super smash bro and not one tag about the game it's self. So yes it's fake and damn fake at that. 

Before you guys continue your "investigations" whether it's fake or not (hint, it's not) you should probably look at the date. Also,

http://www.joystiq.com/2012/06/04/sony-tags-playstation-all-stars-as-super-smash-bros-on-youtub/
http://kotaku.com/5915722/why-does-playstation-all+stars-battle-royales-youtube-page-have-a-tag-for-super-smash-bros
http://www.1up.com/boards/posts/list/57316.page