All those eligible should certainly apply for the service, as an unlocked iPhone is infinitely more useful when traveling abroad -- a reality that deployed military members know all too well.

ENGADGET: Confirmed: AT&T offers complimentary unlock of in-contract iPhones for deployed military personnel

After all, it can be enormously useful when it comes to financing homes and educations.

FORBES: Get Briefed: P. Brett Hammond

Alliances seem even more useful when companies are not potential rivals at all, but firms that are at different points on the same value chain.

ECONOMIST: Mergers and alliances

They are an anachronism from a time when all that was measured was "employee time in the office" rather than the more useful results-oriented measures of today.

BBC: The pleasures and perils of the open-plan office

Even when used with all best intents and purpose, there is little evidence to support the idea of how useful they actually are.

FORBES: Short Selling Bans: Are They Effective?

We get useful information from the face when listening to someone, but human faces are very stimulating and all this takes processing.

FORBES: Three Methods of Persuasion You Can Copy From Obama and Romney (and one from Joe Biden that you should not copy)

The principle that products are inherently more useful and desirable when they come super-charged with dynamic digital services will soon be applied across all categories.

FORBES: Move up http://i.forbesimg.com t Move down