3. A computer readable storage medium storing a program of instructions executable by a machine to perform a method of visualizing and interacting with a joint term graph for a given topic X and two or more group Gs, each of the group Gs defined by a set of values d for a set of dimensions D, comprising: identifying one or more shared terms that are commonly used in two or more term graphs associated with respective two or more group Gs; presenting the shared terms; retrieving a term graph associated with said each group G associated with topic X, the term graph occurring in an ontology of a given entity as a connected subgraph in the ontology and linked to a node in the ontology representing the topic X; identifying a set of terms in the term graph associated with said each group G; displaying, by a processor, the set of terms as tags in a tag cloud for each group G, wherein multiple tag clouds are displayed; linking, for each of the shared terms, a shared term to a tag in the tag clouds that represents a same term as the shared term, wherein a separate term graph is created of terms associated with each group G, and wherein two term graphs are connected by sharing of at least one term; and displaying a shared-tag tag cloud comprising common terms that are commonly occurring in at least two group Gs additional to displaying the multiple tag clouds representing respective group Gs, wherein the multiple tag clouds are displayed as fanning out from the shared-tag tag cloud, the common terms in the shared-tag tag cloud displayed with visual attributes determined as a function of a number of the common terms occurring in the group Gs, wherein all common terms occurring in the at least two group Gs are displayed as a first clustered set positioned together as a group in the middle of a user interface display, and each set of terms occurring in said each respective group G is displayed as a second clustered set as a group, wherein each of the second clustered set comprising all terms in the respective group G is displayed as surrounding said first clustered set, wherein a user is allowed to choose whether an access to a given resource from the graphical user interface via which the term graph is being visualized will increment a usage count of the given resource, wherein the term graph is stored in a data structure format in a memory device coupled to the processor, and wherein a plurality of term graphs can be created for said each group G, but only one term graph is created per the ontology for said each group G.
3. A computer readable storage medium storing a program of instructions executable by a machine to perform a method of visualizing and interacting with a joint term graph for a given topic X and two or more group Gs, each of the group Gs defined by a set of values d for a set of dimensions D, comprising: identifying one or more shared terms that are commonly used in two or more term graphs associated with respective two or more group Gs; presenting the shared terms; retrieving a term graph associated with said each group G associated with topic X, the term graph occurring in an ontology of a given entity as a connected subgraph in the ontology and linked to a node in the ontology representing the topic X; identifying a set of terms in the term graph associated with said each group G; displaying, by a processor, the set of terms as tags in a tag cloud for each group G, wherein multiple tag clouds are displayed; linking, for each of the shared terms, a shared term to a tag in the tag clouds that represents a same term as the shared term, wherein a separate term graph is created of terms associated with each group G, and wherein two term graphs are connected by sharing of at least one term; and displaying a shared-tag tag cloud comprising common terms that are commonly occurring in at least two group Gs additional to displaying the multiple tag clouds representing respective group Gs, wherein the multiple tag clouds are displayed as fanning out from the shared-tag tag cloud, the common terms in the shared-tag tag cloud displayed with visual attributes determined as a function of a number of the common terms occurring in the group Gs, wherein all common terms occurring in the at least two group Gs are displayed as a first clustered set positioned together as a group in the middle of a user interface display, and each set of terms occurring in said each respective group G is displayed as a second clustered set as a group, wherein each of the second clustered set comprising all terms in the respective group G is displayed as surrounding said first clustered set, wherein a user is allowed to choose whether an access to a given resource from the graphical user interface via which the term graph is being visualized will increment a usage count of the given resource, wherein the term graph is stored in a data structure format in a memory device coupled to the processor, and wherein a plurality of term graphs can be created for said each group G, but only one term graph is created per the ontology for said each group G. 10. The computer readable storage medium of claim 3 , wherein the term graph is stored in memory according to a data model comprising a dimension data structure, a group data structure, a term graph data structure, an issue data structure, a term data structure, a link-to-resource data structure and a resource data structure, wherein an instance of the dimension data structure is configured to have an association with zero to many instances of the group data structure, an instance of the group data structure is configured to have an association with one to many instances of the dimension data structure, the instance of the group data structure is configured to have an association with one instance of the term graph data structure, an instance of the term graph data structure is configured to contain one to many instances of the term data structure and one instance of the issue data structure, an instance of the term data structure is configured to contain one to many instances of the link-to-resource data structure, an instance of the link-to-resource data structure is configured to have an association with one to many instances of the resource data structure, and an instance of the resource data structure is configured to have an association with zero to many instances of the link-to-resource data structure.