One clear danger is that they may alienate customers, who will welcome better service but may be more doubtful about uses of the technology such as finely segmenting the market or targeting customers individually.

ECONOMIST: Always-on people

He was doubtful about the ability of the army to cope with conditions in a land they had no knowledge of.

ECONOMIST: Cyrus Vance

Doubtful about the accuracy of Mr. Hornsby's data, Mr. Berger checked it against the NFL data set and found Pro Football Focus was nearly perfect.

WSJ: In Super Bowl, Giants Go Long for a Number Cruncher

Those who doubt the UK government's case, set out on Tuesday, for building a line between London and Birmingham are going to be even more doubtful about the benefits of a colossally expensive link to help out the potential foreigners north of Gretna.

BBC: Going bananas for speedy rail

Professor Tim Morris, who heads the program and has studied the way leaders help or hinder innovation within their organization, says he is doubtful about the notion of the "heroic" leader, a charismatic, totemic figure who pulls subordinates along in his or her all-powerful wake.

CNN: How business schools can produce better leaders

Americans hold their military in very high regard, even as they are much more doubtful and divided about the 10 years of foreign wars.

BBC: Obama's rhetorical balancing act

This is doubtful but it does make me wonder about the afterlife of the thousands of industrial eyesores just sitting unused in our oceans.

FORBES: Audacious New Concept Turns Oil Rigs Into Luxury Homes

They were doubtful about going to war, but, after weeks of Blairite persuasion, a big majority against in the opinion polls turned into a majority in favour.

ECONOMIST: Britain's beleaguered prime minister

In a region where four of the five countries (Finland is the exception) are either doubtful about joining the single European currency or certain not to, there is a reluctance to swallow nostrums from abroad.

ECONOMIST: Remodelling Scandinavia

President-elect BARACK OBAMA: It's the answer that led those who've been told for so long by so many to be cynical and fearful and doubtful about what we can achieve to put their hands on the arc of history and bend it once more toward the hope of a better day.

NPR: Obama Must Manage Great Expectations

She said she was doubtful about whether civil partnerships would be an election issue, despite having contacted a number of candidates.

BBC: Guernsey civil partnership law receives renewed calls