@donnacha | WordSkill - I dunno. Voting in the poll because somebody asked you to would pretty much fit the definition of "word of mouth", wouldn't it?

The poll doesn't ask "which theme provider do you like the best". If it had, I might have chosen StudioPress instead of WooThemes. I voted for Woo in the poll because I see their ads every-freaking-where. Their name is in my face all the time, therefore, that's the one I thought of when I heard the poll question (before I even saw what the choices were). I must conclude that advertising works.