I don’t think the forum looks the way it was intended. The gray backing in the center is very narrow, which often puts the left and right side of the text on a mottled background and makes it unreadable.
Please give us a theme with a uniform background, or make this gray backing the same width as the text, regardless of the width of the browser window.
This is a display issue from our side. We have disabled the background until a fix can be implemented 
Instant reaction… I am amazed. 
Not a mistake, but a suggestion. In the settings of the personal profile there is a checkbox called something like “Open external links in a new tab”. Think about it, maybe it makes sense to turn it on by default for all new users?
All links will now open in a new tab by default.