And one big area of concern has been the cost and security of our energy.
"The one area of concern would be for the Huawei 6.1-inch Ascend Mate, " he said.
One area of concern is the Sahel, a vast semi-arid area south of the Sahara desert.
That had been another area of concern for investors, amid talk of so-called "Facebook fatigue" among users.
The organisation's chief economist, Pier Paolo Padoan, told Reuters that the eurozone remained the dominant area of concern.
The most notable area of concern is the central Himalayan Gap, a 600km-long central arc of the Himalayas.
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According to Richard Moroney, the single area of concern for investors is hardware.
Oftel also has power over another area of concern: the electronic programme guide, which directs viewers around the system.
This has been a big area of concern in the past and the government has previously introduced measures to cool the market.
Honestly, our only real area of concern at this point is about the company's high levels of receivables...an area we will watch closely.
Another area of concern for head coach Andy Robinson in the first Test was the vast amount of possession that was turned over.
As with any new processor, one area of concern for AMD will be assuring an adequate supply of chipsets that work with Duron.
Mineta cited the freight rail system as one area of concern.
Mr Cameron also highlighted fishing quotas as an area of concern.
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The above example is related to venture capital accounting, but the foremost area of concern relates to public company reporting as that affects significantly more investors.
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Security and counter-terrorism cooperation is another key area of discussion, specially cyber security which is becoming a major area of concern for both governments, our correspondent adds.
If you look on the BBC World Service plan map, you will see that Southern Spain is one of the areas identified as a particular area of concern.
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Dr George Rae, chairman of the British Medical Association's (BMA) GP prescribing committee and a GP in Whitley Bay, said this was an area of concern and called for changes.
Rees, like head coach Brian Ashton, identified England's lack of physicality at the tackle area as the main area of concern before Friday's crucial pool clash with South Africa at the Stade de France.
Another area of concern arises from the fact that the Law of the Sea Treaty was drafted long before, and without regard to, the sort of global conflict in which we now find ourselves.
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"People are looking to see if members of Congress are using their positions to get special treatment, and that seems unfair, and in fact House and Senate rules prohibit that, so it's a legitimate area of concern, " Sloan said.
"The growth in the industrial and manufacturing sector remains an area of concern as positive growth of 2.4% in January 2013 comes over a low base, " said Naina Lal Kidwai, president of the Federation of Indian Chambers of Commerce and Industry, a lobby group.
It is an area of deep concern and I think everybody knows where I stand on this issue.
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An area of particular concern to the ratings agencies is the extra debt that borrowers are piling on to their balance sheets.
The Section believes that the work of ERMIS represents a pioneering effort in an area of vital concern to all international organizations, as well as to the broader international community.
This is obviously an area of great concern to the entire world, and to America in particular, which is to see a complete change in the structure and the environment in the Middle East.
Because of the importance of economic valuation in motivating policy change with regard to climate change issues, there is a clear need to enhance the dialogue between science and economics in this rapidly emerging area of social concern.
In terms of acquiring another company for the sake of clearing up existing issues, a distribution breakthrough in any BRIC country would do a world of good for Apple by boosting share prices and easing an area of investor concern.
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Accountability is only one area among many which are of concern.
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