Tried to log on to sickipedia on my mobile this morning and received the following message:
The site you are visiting is restricted to over 18's.
To remove the customer protection block all you need to do is confirm your age... blah blah....
You will need to use a visa/mastercard.
To check your age we'll charge £1 to your mobile, but credit your mobile bill £2.50 to refund it (First time only).