He says the old system was not perfect, but it worked - and he fears the new one will become less effective because of a new layer of management.

BBC: News

He wants the network's users to solve the problems, but a community on its own is far less effective than one backed by the rule of law, as eBay clearly demonstrates.

BBC: Staying safe and taking risks

But one of the most effective workouts takes less than half an hour.

FORBES: Shed Those Final 10 Pounds By Labor Day

On the whole it was a disarming, intelligent and politically effective performance: one expects no less.

ECONOMIST: Politics and the boom

Yet the policy has been less effective in boosting monetary growth, which was one of its main purposes.

ECONOMIST: The Bank of England's next step

One study has already shown that speech supported by special interest spending is less effective at persuasion than other forms of speech.

FORBES: More Campaign Spending Will Strengthen Our Democracy

Louis, found that a 25% stronger dose of radiation used to treat patients with one type of lung cancer were more dangerous for the patients -- and less effective in treating the disease.

CNN: A workout a day may keep cancer away

What if two very similar drugs turned out to be more or less equally effective at treating the most vicious form of macular degeneration, except the one that was approved was 12 times more expensive per dose?

FORBES: Blinded By Savings? Is Cost Trumping Risk On Blindness Drug?