Very few of my pages have images, they are just text. Do I need to stick an image on each one so I have alt tags? Does this really help? Could I just put an image with my name and phone number or does it need to be something different. What if I used the same image on a bunch of pages, can Google tell? Will it penalize me? Say I want to use an image of my name and phone number a lot, should I literally create a new image with slightly different dimensions for each page? Is Google that smart and does it care? I am talking about different domains, different sites. I have quite a number of sites and I know people say link wheels don't work but I have used a bit of that strategy over the years and beats me, it has worked. But I don't overdo it.