Limiting the number of menu tabs or the number of items in a dropdown list to the George Miller’s magic number 7 is a false constraint. Miller’s original theory argues that people can keep no more than 7 (plus or minus 2) items in their short-term memory. On a webpage, however, the information is visually present, people don’t have to memorize anything and therefore can easily manage broader choices.

For example, research shows that broad and shallow menu structures may even work better than deeper menus. Also, link-rich e-commerce homepages, like that of Amazon with 90+ product category links, are found to be more usable than homepages with only a few links.