agora é 00:24 e o programa ta marcando 4:18:39 em um site único site, como assim. além disso, lento pra caramba, chegava a travar dependendo do gráfico que eu pedia (tipo o uso geral diário da semana)

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Stay away.
This addon tracks all websites and ads people are looking at for the sole purpose of creating and selling user behavior statistics. It is maintained by a company whose product is exactly that, tracking user behavior.

It has 50000 lines of code simply to recognize ads on websites - as if they would put that much effort in, simply to show a little ad counter number under the website name, a number that is dubiously relevant to the advertised purpose of this addon anyway. They only track ads because that's data they can sell.

It also slows down the browser tremendously, showing how much tracking stuff they do in the background.