I decided to change the answer for the GTI to offsite links. Even having gobs of bandwidth made it difficult to get the entire page in good time and I want to be nice to my Dad who is on dialup. Anyway I made the changes retroactively for future consistency. The images still come from the same place so really it was just changing the HTML to be "A HREF=" lines from "IMG SRC" lines.
Something I haven't thought about is how long should I post the images before providing the answers. What sounds good? One week? Two? A month?