@twhume mentioned this ad in a comment on my blog – strangely enough I just happened to have taken a photo of that one too :-) You can tell its my photo by the shocking quality. In case you can’t read it, it says:
Advertisers can now send files to your mobile phone for free, via Bluetooth – [hooray!]Ensure your Bluetooth is discoverableWait to be discoveredAccept (or reject the file)
I’m not sure it’s strictly useless, it does have an educational role to play. But it is a total hunk of shit.