Yes, they exist! 38 discovered badges exist, 37 can be obtained!
Add pictures to this (or other articles) to get (or gain progress towards) the following badges:
Edit this (or other articles) to gain/get progress towards the following badges:
Add articles to categories to gain/get progress towards the following badges:
Post a comment in different blog posts to get/gain progress towards the following badges:
Post every day to get/gain progress towards the following badges. Be careful not to miss a day, or the day counter resets!
You just have to be lucky to get this one:
Join the wiki to get this one:
This one, you cannot retrieve. Only the creator has this badge, because you receive it by creating the wiki.
Creating a blog post gives you this badge:
Leaving a message on someone else's wall gives you this one:
Editing your own profile? That gives you this one: