Because I'll only end up hassling you for 10p outside the bus station if you don't. In addition being able to describe yourself as a mysterious benefactor will give an aura of glamour and power.

Donate and you will receive at no extra cost the warm glow that comes from having helped someone out. I'm also happy to publish articles by aspiring writers or add links to any (clean and decent please!) websites you wish to promote. And if that isn't enough you can add philanthropist to your C.V and receive a glowing reference from me to boot.