Well, I don't think it's a bad idea to have specific shortcuts which disable the normal behaviour of a browser, and improve the UX of a website. If they exists:
* they should be explicitly enabled (i.e. RES for reddit)
* you should be notified if they are changing browser behaviour, and an option to disable shall be provided.
In practice the only way users are going to discover these "features" is by accident. How would someone be notified the behaviour is changing? The About page nobody reads?
* they should be explicitly enabled (i.e. RES for reddit)
* you should be notified if they are changing browser behaviour, and an option to disable shall be provided.