Hey Dean,

Good thoughts. Invoke the law of reciprocation. By doing someone a favor, they naturally feel obliged to return that favor. Nothing sneaky about it either. You are offering something of value to people and if they perceive your offer to be of value and take you up on it, then both parties win.

To learn more about this law, read Robert Cialdini's book 'Influence'.

Cheers,
Darren