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An ad in all suggested spots would be too much but one to the left might be viable/ tucked away so its blended nicely with everything else but still seen. The ads that are blended in with threads are perfect. I do have a wide screen :)

Yeah hahaha, I have a Laptop, pretty standard and will not be able to see that space... to do so it will be all crowded...

During some time I saw the UI adjusting well to the space available, not it doesn't, not I'm not sure if something changed or I just imagined it.

Looks like its my screen or setting settings then :) In either case icon links can be resized. The best spot out of the ones I mentioned is under PUBLISH, I think an Ad would blend in nicely there.

I just realized that I had the site scaled down to 80% for a while now. Easier to take screenshots. Now I don't see any of the spaces mentioned by rentmoney lol.

I had to check to see if I did the same with scaling lol. But no, I have a wide screen or its how the my functions are set up. Area under PUBLISH is still a decent spot for an ad. Ads can be sized like any template.