Show stats for currently active users / travelling postcards etc

[laechoppe]

I've just recently joined the project and sent a few cards.
However, some of them weren't registered. What's more, I received a card from a person I was sending a card to.
All this led me to a thought, that the project might be dormant.
It would be awesome to show some kind of stats for the people to understand if it's active and it's worth sending postcards, or there's nobody else actively using it.
e.g.

• The total amount of registered users
• Amount of active users (e.g. some activity for the last 3 months)
• Total amount of currently travelling postcards
• Total amount of delivered postcards
• etc

[LaoshuBaby]

• Amount of active users (e.g. some activity for the last 3 months)

It seems...not much really