There are two ways: one, you can attach it as an image to your posts by clicking "Attach a file" below the comment field, then picking a picture from your computer.
The other way is to upload them to an image service, like Photobucket or Imgur, and then paste HTML code (usually provided by the service) to display the image.
This is no good, but I want to put in my to cents with all you actually funny people
Fascinating... I once wrote out my hands down favourite DnD boss NPc... It was Asmodeus' cat, which is a half fiend with levels in Fiend of Posession. Oh yes, you WILL clean the litter box.
Comments
Irenicus finds it hard to be a playa
The other way is to upload them to an image service, like Photobucket or Imgur, and then paste HTML code (usually provided by the service) to display the image.
(don't tell me)
I'm pretty sure this is the greatest nerdy pickup line in the history of ever!
Edit: Couldn't correct the image so I had to add a new comment. At least it looks better now.