Menu for Accounts/Logout etc.
Echofon Firefox has a context menu on the status bar icon.
As you can see, you can temporary disable popups, force to update tweets, mark all read without opening Echofon window, and so on.
You can use more than one account with Echofon Firefox, right-click the Echofon icon to access the preferences window where you can add accounts. Right click the icon again to choose the account you want to use.
Echofon doesn't overwrite your Twitter browser cookies, this means you can use one account in Echofon, and another on the Twitter website.