I create a LOT of WP sites and therefore tons of menus. A lot of times there is no sensible page for a top level menu item. For instance I was creating a site with internal learning. The top level menu item just goes to homepage. Is this a good practice if there is no good page for them to go to or would it be better to go no where?
<a href="#">for example. This keeps the user on the same page w/o a reload