word-of-mouse
The phenomenon of a particular message or recommendation being passed from an individual to his/her contacts through the internet.
All it took was a little word-of-mouse and the next thing Henry knew his "catsuit with knobs" clip was on boing-boing. He felt like it was the lowest point in his life. That was until he switched on the evening news.
word of mouse
information spread through chat rooms and blogs
Word of mouse told me that Spiderman 3 sucked.