Promoting D

[Walter Bright]

Jesse Phillips wrote:
> It looks to me that Walter's points aren't about convincing people to use 
> it, but to show that you are using it, that there are customers.

That's right. It's called "social proof". 
http://en.wikipedia.org/wiki/Social_Proof

Apple, for example, uses social proof as the central theme in its 
marketing campaigns.

Back in the 1970's, Dr. Pepper hilariously used social proof in their 
oxymoronic campaign "join the non-conformists!"