My financial firm rep said they use Glance Technologies (aka Perk Labs) for screen sharing with their client devices. However, the screen sharing could not be made to work today with the rep on the phone, even though I unchecked the button in my Firefox Privacy settings for blocking popups. I am now wondering if some other Privacy settings in Firefox are known to create issues with Glance Technologies screen sharing. It would also be interesting to find out more generally about Firefox settings and screen sharing using other screen sharing technology firms.