Its their polite way of saying ..."can we follow you around wherever you go?"

I have no doubt that fossbytes as well as Facebook, twitter, google and pintrest are all doing that anyway ...just to make sure if you "forgot" to hit the "allow" button to show notifications...
(note their tentacled "share" buttons that have leverage onto the fossbytes page near the bottom)

As I said elsewhere...
the moment anyone hits a page with such "sharing" sponsors...
all of said sponsors take note of your arrival ...tag you and track you ... your interests..and where you may go from there...
.regardless of the fact that you may not even have a facebook, google+ , twitter, pinterest profile...

the tentacles are everywhere.

it is like a freakin' cancer of the interwebbian lymph nodes...
trying to eradicate it or avoid it is virtually an impossibility...

A self replicating all-devouring tracking virus burning through the web...
that likewise couldn't be expunged...
wouldn't be a bad thing.