Some suggestions:
1. Get rid of the WordPress "Hello World" post.
2. Totally random blogs are tricky to SEO well and having a high picture/video to text ratio doesn't help either. However, they can get popular on social networking sites if your content is good. If you want to stay unfocused, concentrate on social networking to deliver the bulk of your traffic.
3. Watch the number of videos per post. 2 is OK but don't go overboard like you did in the Wonder Years post. Also adding a couple of catchy sentences about each video is also helpful.
4. You need more posts before your promotion efforts will pay off. With as few posts as you have people may visit once and that's it. You want them to bookmark your site and/or subscribe to your RSS feed.
5. It's not a good idea to hop into a forum as a noob and start promoting your site (as you 've seen). To long term forum promote, build up a small reputation in the forum first with a string of good posts, probably about 25-50, then add a simple sig line and eventually start promo-ing individual blog posts in your forum posts. There are, of course, shortcuts but they'll usually get you banned.