Tried to read a post on their forums and after the post loads, comes this lovely modal. The X to close the modal is quite continently positioned so it is under the top UI of the browser and thus cannot be closed. My respect for this site has just been lost.
It's definitely annoying, especially since it seems to pop up at a random time and it automatically focuses the email field at least for me, but I just can't justify calling the hidden close button asshole design since it's obviously a layout calculation error.