The website account is the one you use for the Beamdog client. Your profile on the site allows you to manage your Beamdog purchases and gifts. I'll see about getting that on the FAQ.
Looking at the games pages with Safari on Mac OS X El Capitan, there is a big gap between the 'key features' banner and the table below, so that I initially thought there were no features at all! In fact, I don't think there is a table for Siege of Dragonspear, which looks unfortunate - "Key Features?" "We got nothing!" Similarly, the "WHAT'S NEW IN THIS VERSION" section appears empty got the 3 games that have that banner.
Should also be noted that the hr@beamdog.com e-mail address can't receive e-mails due to permissions issues in the group from external users. Whenever an e-mail is sent to the address, the user gets a vague message receive failure notice.
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https://www.beamdog.com/about/press
https://www.beamdog.com/about/careers
https://www.beamdog.com/about/returns