First of all....Yay!
@BallerinaHippo is starting a story! My vote's for 16:9 cuz it's exactly 800x450 pixels, which you've figured it already, lol.
Secondly, a question for MrsFlynn:
For story threads, I always use an image hosting service. I save my jpeg-format files to a separate storage device then delete all my png-format files.
I'm wondering about when I attach a single image or two to a post.
Question: Once I've attached a image to a post (for example, to answer someone's question or illustrate a problem I'm having), do I need to keep that image on my hard disk indefinitely?
Or may I delete it after I've clicked "Post"?