Aggregator websites are not usually as useful and legitimate as AccessGenealogy.com. Sometimes, they simply aggregate a limited list of other websites or copy information from other websites automatically for the purpose of getting hits on advertising. They are close cousins to the "vampire websites" that prey on people who mistype the address of a popular website. For example, don't try this" but if you type "Ancesty.com" instead of Ancestry.com, you will get a vampire website.
AccessGenealogy.com is a useful and well-presented website. It should not be judged by its annoying online cousins.