29 Nov '13, 9pm

@gentrux @AlbertoTICote Pues aquí lo pone bien clarito:

This section is a little lonely. You can start adding tools by clicking on your favorite tool's option button in the blue tool titlebar. Select "Add to Favorites" from the menu options. You can pick up to 6 tools to be favorites.

Full article: http://www.dnsstuff.com/tools#whois%7Ctype=domain&&value=...