WordPress.org

Where should I ask questions?

http://www.yann.com/en/wp-plugins/yd-wordpress-com-stats-integration

Use comments.

I will answer only on that page so that all users can benefit from the answer. So please come back to see the answer or subscribe to that page's post comments.

Puis-je poser des questions et avoir des docs en français ?

Oui, l'auteur est français. ("but alors... you are French?")

What is your e-mail address?

It is mentioned in the comments at the top of the main plugin file. However, please prefer comments on the plugin page (as indicated above) for all non-private matters.