To attach photos to posts, users are advised to upload images to a third-party server and share the link, which is seen as a resource-saving method. However, the forum also allows direct uploads using an "upload" button, which ensures images are stored securely and not modified by external hosts. Users should be aware of the maximum image size of 960x720 pixels, requiring potential resizing before upload. There is no need for a Facebook account to upload images, contrary to some misconceptions. Overall, both methods for attaching photos are available, each with its own advantages.