OK,so when you go into the textbox for your response/post/question, there's a tab in the top left hand corner above it: this is the pictures tab. In the first tab within the pictures tab, there are all the pictures that you have uploaded; just click on the one you want and it'll be linked in the textbox. You can upload pictures straight into comments as well, by using the upload tab under the pictures tab and it is linked in the textbox and added to your albums when you press the upload button.