This is how you can make millions too.

You have to create sites that will bring in repeat traffic.

Have your users create content and lots of it. User reviews of night
clubs, Resorts, golf courses etc.

Build your site around your users and make them part of your site,
don't build your site for consumption.

Do not enter markets with a lot of competition monitized via adsense.
Try and undercut paid content markets by offering a free service, or
better yet create your own market.

Keep your site dead simple, it has to load fast and have no more then
two ads and one or two pictures other then your logo.

Do not confuse your user, give them what they want and give it to
them fast.