https://www.reddit.com/user/jshmiver/comments/tr3el5/a_history_of_search_search_engine_optimization/?utm_source=share&utm_medium=web2x&context=3

https://www.reddit.com/user/jshmiver/comments/tr3el5/a_history_of_search_search_engine_optimization/?utm_source=share&utm_medium=web2x&context=3