Roughly every 15 minutes I get a "push" notification on my computer screen. They are a fairly recent phenomenon. Instead of someone sending you an email that you have to open, the sender puts his message right on your screen before your eyes without you having to open anything or do anything. But they are there only for a matter of about 10 seconds so you can easily ignore them if you want to. Conversely, if the message looks interesting, you have to click on it straight away if you want to see more.
Without even asking, I am sure that many people are complaining about push notifications. I even know the word they are using. "Bombarded". They will regard such messages as intrusive and distracting. Some pain-in-the-ass types will even want a law passed to stop such messages.
I on the other hand regard them as a great leap forward in communication. How wonderful it is that there are people all over the world (OK, mostly in America so far) who are sending me bits of information that they believe might be interesting to me! Instead of me seeking out information, it just comes to me with no effort on my part. It is an improvement in civilization itself.
So how do you become a recipient of such messages? It happens when you are reading something on the net that interests you. The site owner will put up a requester that asks you whether they can send you more information about the sort of topic that they cover. Once, if you replied "Yes" to such requesters, you would have to provide your email address and the extra info would come to you in an email. Such are the wonders of modern technology, however, that they no longer need your email address. Instead of getting more email, these days you will just get a one or two sentence summary projected onto a corner of your screen. They "know" where you are and how to access your screen. I imagine that could be abused in some way. There is not much that someone has not abused. But, as far as I can tell so far, it is completely harmless.
It greatly reduces what I have to do in information seeking. It actually gives me more free time. Isn't that great?