Of course. It's ALL a numbers game.

I like to put 7-10 videos per account. You get three strikes before you're out with Youtube (although sometimes they go the genocide route and smash all your accounts) and I find that 7-10 is a good number to avoid account bannings.

I don't like to go under that number since you can generate more interest with what looks like a reasonably active account.

Subscribers are important. Always dress your accounts up as well. Spend a little time changing the colour scheme and stuff like that. I found that a decent number of hits to my landing page actually came from my account page and not the video page meaning people are checking the account page and following the link from there.

A few tips to chew over anyhow.