Nowadays every other goddamn site does it. You’re browsing the web, open a tab here, click a link there, and wham: Watchcartoons wants to ?! show notifications. YouTube wants to ?! show notifications. Facebook aches to—it must—?! show notifications. So what do you do? You block them, that’s what you do. God forbid…
Source: Gizmodo – How To Block Super Annoying Website Notification Requests In Chrome