| Company | NRG Investments |
| Website | twitt.us |
| @tw1us | |
| Stage | Live |
| Launched | 4/09 |
Twitt.US is a marketing exchange where users can exchange tweets with each other. Users earn credits by posting other users tweets in their own Twitter timeline (for thier followers to read). These credits can then be exchanged for tweets of their own message in other peoples timelines. Credits are based on how many followers a user got at the time of tweeting.