How infuriates me when, while on a web page, you click on a link, and it opens in the same tab! That’s terrible! Why in the lower-left corner, when you hover over a link, its URL is displayed (actually, not VERY useful information, because it will be displayed anyway in the address line when I click on it), but it does not show whether it will open in a new or current tab. It’s simple and very useful! The most annoying thing is when you are reading the article and want to read later the related info and it is breaking your concentration!
Those who make browsers should think about this!