So far as "Back To Godhead" is concerned, the answers to your questions are as follows: Recipes are all right if you think that there is such a public demand. But just recipes, no pictures: Revision history
Diff selection: Mark the radio buttons of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.