I hate it too. Signed up ages ago to look at work related posts, still check that once a month or so but never post anything myself. But recruiters seem to regularly scan profiles. And, sample size of one, but my company does not really advertise jobs anymore, they still recruit regularly but mainly through recruitment agencies these days. For your industry, i’m guessing you’re looking at London, perhaps Manchester, for location. Both are more expensive than average to live in
Maybe because these petition have never (as far as I know) achieved anything?