15. The method of claim 6 further comprising: creating semantic associative links among resources based on the analysis of user activity; and calculating a personalized link-based rank based on the links and user preferences.
16. The method of claim 15 further comprising: defining one or more implicit activity-based associations (IAA); wherein the IAAs denote implicit, nondeterministic associations between resources; and clustering the search results are clustered by the one or more IAA.