This is an age-old question. Seriously: there's an MSE thread about this that's five years old.

My two personal favorite explanations:

I see it more as a consolation prize. No one looked at your question or answered it, so here's something to hold you over until you get an answer.

-- http://meta.stackexchange.com/a/1579/165581

...it's the the engines way of saying "Sorry, I couldn't get you an answer. Please forgive me :("

-- http://meta.stackexchange.com/a/1653/165581

This is an age-old question. Seriously: there's an MSE thread about this that's five years old.

My two personal favorite explanations:

I see it more as a consolation prize. No one looked at your question or answered it, so here's something to hold you over until you get an answer.

-- https://meta.stackexchange.com/a/1579/165581

...it's the the engines way of saying "Sorry, I couldn't get you an answer. Please forgive me :("

-- https://meta.stackexchange.com/a/1653/165581