- Generally, users act stupidly only when applications treat them stupidly.
- Web conferences are on-line meetings in which a user acting as moderator delivers an on-line presentation to a group of conference participants.
- The forest will act as a defense against desert dust.
- Legislatures often act in a negatory manner.
- Industry is a heavy user of electric power.
- This dreadful murder is surely the act of a madman.