To be safe, many move ID thresholds up to 30 or 40.

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But more than 10, 000 Web sites now recognize a service called Facebook Connect, which enables users to use their Facebook ID and password to move fluidly among sites where registration is required.

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If you had a MobileMe account that you did not move to iCloud, you can use that Apple ID to sign up for a new iCloud account (none of your previous MobileMe data will be present).

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Particularly with Microsoft (nasdaq: MSFT - news - people ) involved: The Redmond, Wash. monopolist made a big early move to try to impose a standard for digital ID, offering a crude version of its Passport service in 1999. (Novell had the digital identity idea even earlier but couldn't find customers).

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Expats who move here have to wade through a lot of bureaucracy and red tape (such as transaction fees and obtaining tax ID numbers), but the welcoming nature of the residents and the possibilities to be had in this exuberant city are well worth it.

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The .com suffix generally implies an American domicile, though not exclusively. (The U.S. also has a .us suffix, but it is rarely used.) Canny opportunists are registering site names like Amazon.com.nl in the Netherlands or Infoseek.com.id in Indonesia, anticipating that Jeff Bezos or Disney will pay big bucks for the names as they move ahead with international e-commerce plans.

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