I would find it very helpful to be able to optionally have Firefox automatically refresh display of the current webpage periodically. If such a capability already exists, it is not obvious how to invoke it. This would for example be helpful when using the browser for e-mail access, to keep the display of received e-mails up to date and to prevent logout. It would also be helpful when accessing a website such as that of a bank, where their built-in auto-logout feature might occur too quickly for your needs. Such a facility would have an enable control, as well as a control to allow specification of the refresh period, e.g., a number of minutes from 1 to 60. The enable control should be very easy and quick to access, e.g. it should be available without even having to open a Settings page.