User blog comment:Fudgyhoops/Yay, Badges!/@comment-74.174.181.8-20120130141030/@comment-3529826-20120130144323

You get a badge (like an achievement) for posting a blog entry.

Fudgyhoops is right, achievements are a great incentive. We would work for hours just to get one. And all achievements are really just short row of information (user_id, achievement_id, timestamp) in a huge database. They are meaningless, yet so important for us and close to our hearts. I am an avid achievement collector myself.