Related Clues:

• One clicking "Remember me," maybe
• Meth clinic clientele
• App purchasers
• IT person's client
• One reading a manual, often
• One requiring tech support
• One often paying a fee
• Snapchat participant
• Fee payer, often
• Certain manual reader
• They might tweet
• One visiting many sites
• Word before "fee" or "ID"
• Screen actor?
• One who exploits others