1. A method of facilitating interaction between users of an electronic community, comprising: reviewing a user activity log for each user in the electronic community, each user having an associated user profile stored in a user profile and relationship database; executing a natural language parser to extract noun phrases from the each user activity log; updating the user profiles from the extracted noun phrases, a keyword being associated with each extracted noun phrase, said updating based on a usage frequency of the extracted noun phrases and an importance value of the keywords; storing the updated user profiles in the user profile and relationship database; executing a similarity based clustering algorithm to generate clusters of the updated user profiles, each cluster consisting of a group of users of the users in the electronic community, each cluster representing a relationship between the users in each group; and storing each cluster in the user profile and relationship database, wherein a digital hierarchical dictionary comprises synsets, each synset being a set of cognitive synonyms consisting of noun phrases, said synsets being interlinked into a semantic hierarchical tree within the digital hierarchical dictionary, wherein the keyword associated with each extracted noun phrase is in a synset within the semantic hierarchical tree, wherein the similarity based clustering algorithm comprises a member importance function and a member similarity function, wherein the member importance function ascertains an importance value of keywords as a depth of said keywords in the semantic hierarchical tree, wherein the member similarity function ascertains a similarity distance between keywords as a path distance between said keywords in the semantic hierarchical tree, and wherein said executing the similarity based clustering algorithm comprises: using the member importance function and the member similarity function to ascertain the clusters.