In my post, I'm trying to add media from another website (a photo from another site). This is the link: http://www.flickr.com/photos/66606673@N00/6370244221/
I want to embed the photo in the post.
I keep getting a red X next to the URL, so it's not being accepted.
What do I need to do to get the photo in there?
The blog I need help with is allthingsattainable.com.