| Clue | Source | Date |
|---|---|---|
| Craigslist et al. | Newsday | 15 Mar 2026 |
| Craigslist and Groupon, e.g. | ||
| Pop-ups can lead to them | New York Times | 14 Apr 2024 |
| Craigslist and pennysaverusa.com, e.g | Universal | 28 Feb 2023 |
| Craigslist and others | ||
| What Web page sponsors may link to |