The http-proxy should classify search engine links to the classification of the final target site under consideration of the local-site-list

Explanation
Search Engines have their own URI-Classification. To track user-selection they do not reference the original target URI, but a tracking relocator of the search-engine.
This tracking URI should have the same classification as the target URI.
When computing this classification value, the proxy should take into account any local re-classifications done thru the local-site-list, and assign this one value to the tracking relocator URI