I also have quite the collection, but I'll share one I just came across in my archives. The mods often have to break the rules to help me create certain screenshots for the staff guide...they were allowed to improvise =P
Nope, you need to use imgur. It's really easy, just sign up and after that it's easy to just upload and take the link for each image There's a little guide under the "post reply" buttons for how to upload