You may post pictures through the attach image option at the top panel as you are writing a new post. It will plaster your image into your post anywhere that you click on it Attached images come out as thumbnails--if you want the image showing full size post them with an image host, such as postimage, tinypic, imgur and others. These sites delete pictures after a while, imgur pics lasting the longest in my trials with it (their guarantee is 6 months). If the images needs to last and display full size, I'll use a picture host and attach it to the post as a safety net. This works on most forums I've been active on.