• Ctrl+click or middle click on a link to open in new tab, or 【Ctrl+n】 to open new page, will not always work. Perpetrator: Google's Google Plus, Twitter.
• Each site's images often has its own non-standard UI. Some lets you close it by Esc key, some not. The close box is sometimes on upper right, sometimes left, and drawn in different style. Perpetrator: Google's Google Plus, Twitter, Facebook, and all the social sites.
When a key that works only sometimes, it's annoying, but also dangerous, because after a few times of non-working, you stop using that key. Instead, user goes for the sure way of using the more cumbersome mouse.
From user's perspective, it's plainly annoying. However, the thing is, these fancy sites don't care, for good reasons, because, vast majority of people, probably 90%, don't even know about basic keys. Control+Click would be considered advanced.
so, how do we take this? should this be considered the inevitable progress of UI, or is it simply crassness of the corporations?