NLP and influence
NLP is often associated with influence and manipulation. This is a mistake which likely originates in the first techniques developed by NLP which were mainly oriented to change (psychotherapy in particular). NLP was not initially developed with manipulation or influence in mind.
However, what is true is that NLP can be used to develop influence because of its effective and highly pragmatic behaviour model which initially served the development of the therapy techniques.
NLP techniques in influence
Some techniques of NLP have direct and obvious applications in influence, such as the Milton Model with its powerful suggestion language patterns, or the Meta Programs which help to predict behaviour.
Others elements have less direct usage but can be equally useful. The Meta Model helps improve understanding and changing of a persons vision of a situation (to be used with caution) or the preferred representational system concept to improve communication.