Fully anonymous (as much as a public search engine can be). No tracking cookies or user accounts.
Would you like a comparison of currently working torrent search engines or an explanation of how meta-search differs from a regular indexer? skytorrents search engine work
Note: Skytorrents officially shut down in 2018. This article explains the mechanics of its operation during its active years, serving as a technical case study for torrent search engines. Fully anonymous (as much as a public search engine can be)