Sure. Sorry for bad link.
http://bjfogg.com/ http://captology.stanford.edu/ http://behaviorgrid.org/ http://behaviormodel.org/ - this model is powerful and makes zillions for ones who know how to apply it to their products
http://bjfogg.com/ http://captology.stanford.edu/ http://behaviorgrid.org/ http://behaviormodel.org/ - this model is powerful and makes zillions for ones who know how to apply it to their products