linden lab reserves the right , upon reasonable notice , to -lrb- directly or through an applicable payment service provider -rrb- : -lrb- i -rrb- charge for access to some or all of the service , charge for access to premium functionality or content on some or all of the website , require a free or paid subscription -lrb- `` usage subscription '' -rrb- , or account registration to access some or all of the service ; -lrb- ii -rrb- change terms and conditions for the service or portions thereof ; and -lrb- iii -rrb- restrict access to the service or portions thereof , in whole or in part , based on any lawful eligibility requirements linden lab may elect to impose -lrb- e.g. geographic or demographic limitations -rrb- .