Linked In?

It is irritating when people I barely know endorse me on  LinkedIn. Do they expect me to endorse them? Who are these people?

And then the other day, I get all these people wishing me a happy anniversary. What Anniversary? What the heck is going on here?

I have not installed LinkedIn on my new phone yet. And I probably won't. What would be the point? I never used the app. The email is annoying enough, I do not need notifications.