1. Click Add Reply on the desired Topic
2. Select the 'Host an Image' Button , Browse for file and hit Upload
3.Then Select Image Url And Copy this Link
4. Paste the Link into the insert image Button and Click ok
You Should Have a link Like this
5. Click Preview and make sure the image is there
6. Click Send and Your Done.
Try to post more then One Flick in a Post..!