Joomla has an great feature with an annoying BAD habit: it’s called the URL Alias. The URL Alias allows you to enter a search engine friendly URL of your choice for a menu link. For example, for your About Us page, you can enter The best widgets on the planet in the menu Alias field and your URL for the About Us page will look like this:
No doubt, this is a great feature, but the developers left out an important setting: No Alias for the Home / Default link; for example, if you click on the Home link on your Joomla site, your URL looks like this: http://bestwidgets.com/home. However, it should look like this: http://bestwidgets.com. Period.
Click here to find out how to remove the Joomla Home Alias