Gmail suggests links based on the words in your emails. The assumption is that you'll be interested in things with the keywords from your correspondence, I guess. So I just went to clear my spam folder and it suggested a recipe for 'Broccoli Spam Casserole.' Was afraid to click on the link in case the recipe went something like this:
2 cups broccoli, chopped 1 Get VtAGRtA here 1 Re:H00dia works!