One model of memetic engineering, focusing specifically on 
propogation, goes under the informal name of "activism".  I 
introduced the topic of memetics amongst a group of organizers last 
summer, and they enthusiastically adopted it as a way of explaining 
what they do (one of the few times I have successfully connected 
progressives to a transhumanist subject!).
To mount a successful meme propogation campaign takes advance planning 
and tactical knowledge.  This is rarely attempted by an individual;  
usually a team is set up based on individual expertise and training.  
Having a central visionary is also helpful--someone who where the 
campaign fits into a movement overall, someone who connects well to 
other people through an understanding of their hopes and fears.
One of the major reference books in the area is _Organizing for Social 
Change_ by Kim Bobo, Jackie Kendall and Steve Max of Midwest Academy.  
Sin,
Kathryn Aegis