We've heard about viral marketing campaigns... we know rumours are viral.... we know germs spread while you're not even looking (sleeve sneeze anyone?)...
But really, your influence is viral. The recommendations we make, the comments we offer and the ideas we share are often repeated and spread. Ok, not always in their orginal form, but usually with the credit attached.
So you're not just affecting, supporting, helping one person. Your participation creates a ripple.
Be generous with your influence; infect your communities thoroughly and with good cheer.