Statistics

Stats is a future system that will get added to Minecraft. Notch talked about stats (along with Achievements) on his March 18th Blog Post.

Notch said:

"Achievements will NOT be chores like “cut down 10000 trees”, but rather challenges like “ride a pig off a cliff”. Stats, however, will be used to keep track of how many trees you have cut down. The long term plan is to show achievements and stats from the profile page on minecraft.net as well, in case you want to brag."

Stats on the Minecraft.net Profiles
Notch also commented that the plan is to show achievements and stats on the profiles of the Minecraft.net site.