Architecture that comprises a mediation component which identifies engaged applications and, gathers and actively monitors information from the engaged applications (e.g., text displayed directly to the user, text embedded in photos, fingerprint of songs, etc.) to infer the working context of a user. The inferred context can then be handed over to one of the applications, such as a browser (in a form which does not cross the privacy barrier) to provide improved ranking for the suggested queries through the preferred search provider. Since the context is inferred into concepts, no PII (personally-identifiable information) is communicated without user consent—only very high-level contextual concepts are provided to the search engines.