7. The method of claim 6 wherein combining the at least one category-interaction indication is based on at least one item selected from the group consisting of: a maximal indication between the interaction and the at least one category, and a number of churning categories the interaction is associated with out of a total number of churning categories.
6. The method of claim 1 wherein determining the interaction churn score comprises the steps of: categorizing the interaction into at least one category, by determining at least one category-interaction indication associating the interaction with the at least one category; and combining the at least one category-interaction indication into the interaction churn score.