A method for providing per-user aggregation of content accessible via a personalized user site may generally include receiving a request for metadata and determining whether the requested metadata is expired. The method may further include returning at least a portion of queried metadata prior to verifying whether the metadata is expired. The method may then include querying a change log for metadata modifications. The method may further include, if metadata has been modified since a previous query, sending a query to a community site for metadata that meets change criteria. The method may also include receiving the changed metadata and returning the changed metadata to a content group container within the personalized user site.