"It might, but why not just post a link telling women (and men) how to do that correctly."
Because teenage girls and many others "blank out" what they are not really interested in, these random status's grabs people's attention and is then noticed daily, so keeps them interested, if only to complain about them.
I have seen plenty of instructions for examining the breasts etc amongst all of the frippery.
I don't know anyone who hasn't been affected by cancer. My middle DD (17) has posted an ending to the "I like" campaign, her best friend died at 18 from an undiagnosed brain tumour, my DH died of cancer, her cousin died at 23 after multiple surgeries from a female cancer, my Mum has lung cancer, I could go on.
My point is, don't assume that you are anymore affected than anyone who does indulge in this. I have seen these types of campaigns starting conversation that without them, wouldn't of taken place.
Some people are not interested in randomly finding out about health matters. It takes these sort of campaigns on social media sites to get them interested.
MN isn't a good cross representative of the general population IMO, that these campaigns are aimed at, posters on here are better informed, interested in important health issues and want to talk about those issues, rather than Cleb culture etc.
There are people who only read when the log into FB and most things pass them by. Some people use the television adverts as a chance to go the toilet and get a drink etc.
I think sometimes posters on MN widely over estimate the intellectual level of many in our society, tbh.