There is a simple method of posting a photo or image to the forum, without using a photo hosting site like Photobucket or Flickr:
1. Go to
http://imgur.com/2. Click on New Post in green box at top left
2. Browse or Drag your photo to the box on the screen

4. Hover over down arrow at top right of photo
5. Click on Get share Links

6. Click on
Copy - bottom left option (BBcode for forums)

7. Paste url into forum!
You're done! (Close Imgur)