According to Reforma's investigation, an identity card number that Ricardo Miguel Cavallo submitted to the Mexican authorities in a residency application is the same one sighted by the Spanish judge, Baltasar Garzon, who wants to try Miguel Angel Cavallo on charges of torture and murder.

BBC: Mexico boss held on torture charges

Officials are attempting to make these tasks more manageable by requiring that users of the most prominent microblog service, Sina Weibo, register using their real name and identity-card number by March 16th.

ECONOMIST: The power of microblogs

Every ID card has an identity number, but if the number starts with 0, the holder of that card is not allowed to travel outside his or her province.

BBC: The end of a wandering way of life?

But we both keep an eye on our joint accounts (which makes good sense for a number of reasons, including monitoring identity and credit card theft), and we both discuss how our money is being saved and spent.

FORBES: The Best Boost For My Finances: My Parents' Divorce