From the Levels and Points page:

In many ways, Walker Tracker is a game.

• You compete with others via competitions
• You compete with yourself via your own stats
• You progress as a walker - you get in better shape, you build a routine, you become aware of your activity.We've designed the points system to be game-like.

Q: What's its purpose?
Our levels and points system is used to give you a sense of progression on the site. Its effect is the opposite of a really high step entry: it rewards commitment and endurance, leadership, involvement and stick-to-itiveness . The giveaway points help you recognize others - a way to say, hey! Nice job there. Or, thanks for the tip, for helping me out, for being you.

There are a few things you should know:

• You can earn points
• You can give away points
• With a certain amount of points you can gain a level
• A level is mostly a symbol of progress and status - however, in some cases they do limit what you can do on the site: level permissions

Giveaway Points
Along with the points you earn, you also have Giveaway Points which you can give away! These points are completely separate from your own points. When you give out Giveaway Points, you are not giving away your actual points, but points you've been awarded just to grant others.