If you have your domains hosted in one place, or with a former webmaster, and the site hosted somewhere else, and SSL certificates hosted in another spot it is easy to have oversight. We have e-commerce clients that have had their websites go down because they did not pay their bill during renewal. Come to find out, they had their hosted services completely spread out and did not have a full grasp of what products were coming up for renewal. We were also able to help them save money by eliminating services they did not need.