One of the most popular ways to post a photo on the About Photography forum is to place the photo in the message itself rather than as an attached image. This process is called embedding. The process to embed a photo in a forum message is very simple. However, to embed an image it must first be hosted on a website. There are numerous photo sharing websites which allow this type of photo posting to forums. My Top Photo Sharing Sites
list will give you some ideas of sites to try. Once you have uploaded your photo to a photo sharing site you can begin the process of embedding the photo in a forum message.