What tasks are involved in a Youtube video for bounty campaign?

Hi,
I've read some posts about bounty campaigns and learnt some things that as a newbie to cryptos I did not know.

But there are some questions I have and one of those is about youtube and blog posts. And hopely some experienced members can help me.

-What type of videos require? DO I have to be in front of camera or can be just a video made with screen recorder softs, or even with just images and no voice?
-Do they count the views the video gets, the susbcribers you have in your channel or just by making the video?

-For blog posts, does it have to be in a custom/own domain? or can it be in a third party blog network like blogger, wordpress.com, tumblr, etc?

-What's a stake and how much does worth in BTC?

-When the campaign ends, I can change my signature again?
-For signature campaigns, do all posts need to be in only one language or can be mixed-As I post in spanish and in english?

-I don't have many friends in fb but I have access to accounts that have many friends, is it ok to use different FB accounts? Do they have to be english accs?

for now those are the questions I have, thank you in advance for your help.