In NI and Ireland it is now against the law to purchase sexual services ( not to sell them). UglyMugs is a site for sex workers sharing info on punters ( including their phone numbers and contact details). Set up to warn about violent /abusive men, it is now listing punters who have not turned up for or cancelled appointments. According to someone who uses it, it may also be being used to post serious untruths about people who leave or threaten to leave bad reviews. This site is sharing phone numbers. This site also shares info with the police. I only know this because someone I know, who uses the site has told me about it.