All the big companies have to use social on the web.
To illustrate the understanding of the social for big companies you can look the open keynote of P&G;(pdf) about the Word of Mouth.
If it’s not clear for you that big companies understand the social you can look the Dell Slides :
Dell’s Social Media Journey - econsultancy Masterclasses, November 2009
View more presentations from KerryatDell.
You tell me qu’essaye but it does show? Just as large firms have included but do not (always)!