http://34reqsy6tqou6avwrkm23s4mpkrwz3drtq2e5yr7sywi76h7plnaahad.onion/articles/search.xhtml
According to this stat site (archive) (MozArchive) , Smart Redirect seems to collect the browsing history of almost 20K different people every day - a pretty significant violator, then. What this service actually does is show sponsored results that are indistinguishable from the regular ones aside from a little image next to them (for which Swisscows makes another third-party request).