I have updated my site with the twitter consumer key and secret, but I am still unable to post images hosted on twitter in my posts. After copying the image address and pasting it in post, the link and not the image is shown in the preview window. Please note that images hosted on other sites (like flickr) work just fine.
My second question is about storage. Is it possible to disable the local image uploading/ storage feature and require reference links for all images. My forum is going to include a lot of images and I am concerned about server storage space.