So David's top five presentation tips.

Novelist Amy Tan digs deep into the creative process, looking for hints of how hers evolved.

Business is good for development and development is good for business.

It comes in handy.

Berber is useful.

Statistics are helpful.

Sport is good for your health.

Electricity is very useful.

I'll give you a good piece of advice.

The Berber language is useful.

There were just very raw nerves and hypersensitivity to hints of disrespect, on the part of the professor, and of the cop.

There are also hints that a reshuffling of important positions within the Party will take place, allowing the presumed heir to form a new power base.

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Personal computers are very useful.

That was a useful signal.

Significantly, there were strong hints from senior Chinese leaders at the Forum that hukou reform is now under active consideration.

The AKP has been under constant threat of a ban through much of its existence, and Erdoğan was jailed for reciting a poem with religious imagery.

So very small, but very useful.

You'll find this map very useful.

You should read books beneficial to you.

All have added useful information.

Useful information about Bangkok

Telephone services and useful telephone numbers and links

Add to all this the claims that protesters have foreign agendas they aren't Egyptians, just a group of 'KFC eaters' who are paid in dollars.

A couple of other useful changes will follow.

Institutions have also helped.

There are useful analogies for policies in other countries.

But it is also not very useful.

This category is especially useful for solving especially challenging problems.

It will serve as a useful reference point in our deliberations.

Many of the recommendations are useful and appropriate.

The case of New York City is instructive.

Those targets have served as a useful rallying call.

I believed, and I still do, that my story could be helpful.

It can be defended as a useful and logical beginning which lays a foundation.

We find those reports to be very useful in our discussions.

The French government s recent hints about its reform agenda for 2011 suggest that, contrary to earlier speculation, an enhanced role for the SDR will not be at the center of its efforts.

Maybe we'll learn something really useful about it, but it's interesting and fascinating.

This historical experience was good for reform capability.

These numbers may be perplexing, but they are useful to understand.

Such sacrifices, however, would be well worthwhile.

Its methodology is largely sound, its purposes are valid, and its findings are useful.

Adopting a comprehensive legal framework would be a useful first step.

The grease extracted from them was also useful for soap making.

The President I think we have had a very useful debate.