I like the stories suggested by Pocket, they seems to be from trusted sources and the personalization seems to happen locally[1].

>Are these stories in the new tab personalized to me?

> For the most part, no. Most recommendations on your new tab come from a general list of the best stories on the web. But Pocket is actively exploring ways to deliver personalized recommendations in a way that vigorously protects users’ privacy. Importantly, neither Mozilla nor Pocket ever receives a copy of your browser history. When personalization does occur, recommendations rely on a process of story sorting and filtering that happens locally in your personal copy of Firefox.

[1] https://support.mozilla.org/en-US/kb/pocket-recommendations-...

I like the stories too! Still doesn’t mean Pocket has any business being forcibly built into my browser, though.

Disable harmful website checking too (url leak).

What URL leak? There is a database of malicious URLs that is downloaded by Firefox periodically. It doesn’t use a remote database lookup on demand.