Ouch. The ASA (Advertising Standards Authority) has banned a Home Office radio ad promoting a child-protection site, because it could have directed people to porn. The advert cannot be broadcasted again without substantial editing.

The correct site, thinkuknow.co.uk, advises children on staying safe online. But one listener misspelt the address, and found out that there are many things she didn't know, and really didn't want to know. Instead of typing 'u' in the web address, the woman wrote 'you', taking her to a different website. See if you can resist.

The advert said: "Giving out personal info could let a paedophile track you down. Be smart online, be safe online." Perhaps it should have also mentioned not inputting URLs phonetically, online.

The full adjudication can be read here.