We think you like the idea of organizing tournaments with the users you share your environment with.
Currently were exploring the idea of developing a new widget type which will allow you to organize tournaments & compare your progress.
The user will be able to invite other users from the environment he is part of, minimum will be 1 and maximum will be 10 other users. The tournament widget shows the combined goal and what every users has contributed to the combined goal over a certain period. When a combined goal has been reached it will be possible to set an even higher goal together.
More detail ideas for this are welcome, please leave a comment.