Getting your video's viewed is all about content, presentation and networking.
To get views you need:
a) Good content.
And/or:
b) Good 'tag' words. The more the better (Youtube dose have an upper limit on the number though).
c) A good video description.
d) A good network of friends and subscribers.
e) Getting 'Likes'.
f) Don't forget to 'Share' your video's and 'Post a Bulletin' to your friends.
g) Video respond with your videos.
So, good content is the hard one. There are no rules, but try to be original, or stick to a theme, or both. Here's an example. Have a look at this:
http://www.youtube.com/user/EbensR4Real
The trick is to engage your viewer from the start, and keep them watching till the end. Hard to get your video 'Liked', if it's not watched in total.
Tagging your video with as many of the right words is very important. People find your video's with these 'Tags'. Use many tags.
Always do a full, and detailed description of your video (this will help when Google 'crawls' for videos). Provide links as needed.
Make friends. Reach out to other similar channels, and [Add Friend]. Offer Sub4Sub to increase your subscribers.
Double check your editing (smooth transitions, clean/even audio, ECT) before uploading. Sloppy editing on your videos, effect your chances of getting 'Likes'. Remember too 'Like' your own video (people in your network will see this, and be only one click away from watching your video).
After uploading:
Use the [Share] button, to put your video's on FaceBook/Twitter/MySpace/ETC.
On your channel, use the [Post Bulletin] to send your video (with a message) to all your friends.
Post video response to your own video's. Seach for videos similar to your own, and then post your video's as a response.
Multiple views:
Thought should be given to your channels appearance (back ground, colour scheme, play list's, profile wording, ect). A nicely designed channel will encourage your visitors to stay and watch more video's.
Also:
If you visit random pages and comment. People will see your avatar (one click, and there at your page), and have a link to you. Be careful of spamming. Some people get very upset.
Hope this helps