Related Clues:

• Join
• Say yes
• Join up
• Get on board
• Choose to participate
• Decide to join, e.g.
• Choose to take part
• Decide to take part
• Decide to participate
• Agree to take part
• Sign up for an offering, e.g.
• Agree to participate
• Agree to accept email ads, e.g.
• Elect to take part
• Allow oneself to be data-mined, perhaps