I wanted to join this contest, but I did not know what to write about? Last day I luckily got this idea.

WARNING! : This tutorial is not for cheaters and mod users!

So...
You have a big city and you want it to get populated? You need to search at least a small village with a few villagers? When you have found it, lets start to move them! But how? They allways go back to their houses! But you know that villagers go in any building with four walls, roof, door, maybe bed. So start to destroy the village house by house. DO NOT USE TNT!!! You must destroy all with your hands and tools. The villagers will move to the nearest house. Destroy it, too! Do this while there is one house last. You must build another bulding with four walls, roof and door. Destroy that previous house and they will move to that new building. Do another building like this near, destroy the previous and wait while they are moving. Do this while you doo not come near your city. destroy the building and watch your populated city! On the beginning there will be only few villagers, but they will "breed", because there are more houses!

I hope this tutorial helped to someone!