Related Clues:
- Methadone clinic visitor
- One calling technical support
- Rehab population
- Techies' clients
- 46 Down clients
- Facebook friends, e.g.
- Frenemy, maybe
- Mac person, say
- Password enterer
- Ones with e-mail addresses
- One busted in a bust
- Net surfers
- Manual's intended reader
- Ergonomic-design consideration
- Cause of many computer errors