"logged-in only" editing
Fragment of a discussion from Talk:Task force/Wikipedia Quality
For anonymous creation, we collected some statistics. Apparently, 55 to 75% of articles newly created by anonymous users are speedy deletion material, but the percentage is the same for the users who just registered. In other words, the usefulness depends only on the experience of the user, not on whether he/she is logged in. There are of course other issues like for instance impossibility to communicate with a dyunamical ip and others.