An option to block certain url

Last post by khariong: Dear Sir/Madam, I would like to kindly request you to please provide an option setting to be able to block certain url as I am using opera mini browser to brows certain social networ, like facebook and so on, sometimes my account was hack because I was tag with certain urls or phising web pages. This will not only help me alone but it will also help others social networ user for safer browsing.
ThankYou
Yours Sincerly
Wanlambok Basaiawmoit.