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by quyleanh 923 days ago
An easy example for comparison is hosts file cannot block YouTube ads, while this one can.
1 comments

How? Can't Youtube just detect which expected resources are not loading and refuse to play?
I know the YouTube ads is getting more complicated now, but it's just simple example. Another is hosts file/DNS blocking will remain the blank space on web page, but this one will not.
How does this avoid blank spaces? Does it parse and rewrite HTML or inject Javascript that does?