One strategy - copy a successful site
Everyone knows about the success of YouTube.com. When I look at it today, it has an Alexa rank of 5.
It was possible to detect YouTube's rate of ascent fairly early in its rise. So what should an aspiring entrepreneur try to do? Copy it.
Thus we have LiveVideo.com, which has been making a very credible run in Alexa and is today ranked at 1,450. It will be interesting to see where LiveVideo is in 3 to 6 months.
The message is simple - if you see a site you like, and if you can think of ways to improve on it, you might try copying it. It does not always work, but it might be worth a try.