LinkedIn is a good example, I think. One day I got a “you have a new message” email. I clicked it, thinking, well, someone has messaged me, right? It turned out to be just bullshit, someone in my network had just posted something.

I’m sure the first few of those got a lot of clicks, but it prompted me to ignore absolutely everything that comes from LinkedIn except for actual connection requests from people I know. Lots of clicks but also lots of pissed off people. I guess the latter is harder ti measure.