Just ask...

Hi,

Word of Mouth "nodes" are easy to find. Just ask. You can use a 'sociometric
method' - ie. Map the networks by asking the members of a community who they
ask for recommendations. You can use a 'self designating method' - ie.
Identify nodes by asking people if they are one. "During the past 6 months,
have you told anyone about a new product, etc?" "Compared to your circle of
friends are you more likely to be asked advice about (XYZ) or less
likely..?" "When you and your friends discuss new ideas about (XYZ) do you
mainly listen or try to convince them of your ideas?"

Clunky but serviceable.

Cheers!

Michael Kiely