After reading this post, I tried logging in to my Glassdoor account (which I haven't used in years) in order to delete it. But as soon as I log in, the website throws up a modal dialog that requires me to answer some personal questions (starting with my current employment status). There seems to be no way around this; all the other user interface elements on the page are disabled.

So yeah, if you want to delete your Glassdoor account to prevent them from exposing your personal information, the only way you can do so is by potentially exposing even more personal information...