The red x in the square where a picture is supposed to be, is a result of posting a link of a picture that is hosted on another website. The best method is to request permission from the picture owner to copy the picture, and then post the picture directly on this website, with credit given to the pictures owner. Linking to another website without permission is considered "stealing bandwidth", since websites pay for usage by bandwidth. I have found that people are frequently taking our "band with" by posting links of our pictures on other websites.