It is necessary, probably, to answer the *given* the question, too.
Potomu that the use cook the essence of the use *your* machine to *their* needs. To store some information about you, to it later to pick up from there.
Why so crooked done — with various Ob phenomena at each site that nobody reads? Well, the same legislators!
We had good, of course, has no obligation, to impute (that would be a violation of user's freedom), but simply to push (via an ad campaign or something like that) the developers of the main browsers and mass users one to realize the opportunity to really *control* that is saved on your machine; the second is to begin to use it.
HTML, no hidden surprises, like not imply.
Why not warn that now almost every page on the Web is now definitely wants to fulfill you in the real browser *program* that not only that most *proprietary*, and are set and updated against your will — that's a very good question.
I hope that sooner or later will start with this to do something, and then have a separate page which is nothing but text in fact there is, even just to read it proprietarily.