The danger that a helpful comment could come back to haunt them in the civil courts will make them even more tight-lipped.

I send back their letters adorned with helpful comments in green ink and including small sums of money -never returned - to pay for our radio listening.

In tough times there are always petty ambitions to be aired, kind suggestions of enemies to be ignored and helpful comments from the sidelines to be endured.

I cannot seem to stem such helpful comments, cannot stop myself from offering the benefit of my wisdom.

Commentators are non-researchers who post helpful comments on questions and answers.