How do I get higher rating and what are Mana points?

Every registered user has a rating that reflects his activity on MagicVideoArchive.
You get a certain number of Mana points for everything you do.
The more videos you add and the more you interact with other content, the more Mana points you receive.
Some of the most rewarded aspects of MagicVideoArchive are quality and popularity. If the content you add to MagicVideoArchive shows to be popular, you will get more Mana. If it shows to be of much lesser quality than most other videos on MagicVideoArchive, you can lose some.
In general, adding great videos gives you the most Mana points and the more quality fun you have on MagicVideoArchive, the better your rating is.