HN user
Neat, although it would be interesting to see the effect of having dots persist for more than one refresh, and perhaps fade over a few secs. I think it would look much smoother. Nice job though!
Repeat after me: A website is not a startup.
It's bad enough that everyone with half a business idea calls it a startup, but now everyone with half a website prototype is joining in.
Looks very polished!
I clicked on "Instant Personal Social Networks" expecting it to go somewhere, like maybe a page with more details - I think I was fooled by the ellipsis. IF you created such a page, a small "Or learn more..." button linking to it after the Get Started button might be helpful, so say if the video wasn't working, abd I hadn't found the other link, I still can). Finally, the last frame of your video should be a call to action, so I'm not left with a black hole on the screen. Oh, and link your logo on your blog to the main website, not to itself. You want the blog to drive traffic to the big enchilada.
For fantastic free weekly video tutorials you must check out Ryan Bates' http://Railscasts.com. Each one is typically on a new topic, (although there have been "mini-series") each exploring some new feature, technique or add-on.
If you need a quick-start on deploying one of the many gems out there, there's a good chance Ryan has you covered.