According to the website,
"ResidentSwap.org works in four ways
- Lists currently vacant residency spots.
- Anonymously lists spots currently filled by residents who would like to swap places with you.
- Frequently monitors websites that publicly advertise residency vacancies and immediately sends alerts to your email or cell phone whenever new spots open.
- "Together Anywhere" mode, designed for couples, locates two spots in close geographical proximity to each other."