Yesterday I set up a group called the 'DSi Paint Pokemon Battle Factory'.
It is a group that will bring DSi Paint users together to battle and make friends. Joining the fun is simple. Visit the group page, join the group, leave your details in the shoutbox and voilà! You'll be added to the member list and the Database. Your data is safe, don't worry. It is processed by a computer and is only viewed by me in order to set up matches.
It's really easy, and should make for a really good group if it works out.
If you have any questions, leave them in the comments or Message me.