| Inspired | Wired | Tired |
| physical gestures | game environments | |
| postal service | video-phones | instant messaging |
| face to face | web browser | bulletin boards |
| string paper cup | voip | chat rooms |
| megaphone | sms | mobile voice |
| passing notes | gmail | landline voice |
| carving names under desks | webcams | voicemail |
| whispering | blogs | TV |
| walkie-talkie | | |
| radio | | |
| Phone-tag | | |
| Signs | | |
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