It seems there is a new feature in the maemo downloads page, bug 2155. (And other new bugs)
So if you have your application in the extras repository, now you have a measure of your application downloads from the repository:
Undoubtedly it’s a very good news and I hope now that we have this option more developers upload her packages to the extras repository. It’s a small feature but the progresses they will do in this field soon, surely will be more reasons for upload packages to the extras repository.