Ad extensions are extra pieces of information you can add to your ad, like your phone number, business location, site links, or a list of your services. They make your ad bigger and more useful without costing extra money just for showing them. They give potential customers more reasons to click and more ways to reach you. Research shows that ads with extensions tend to get higher click rates than basic ads. Have you tested ad extensions before, and did you notice any real difference in how your ads performed?