Home › Definitions › Y Y SEO Glossary · Letter Y SEO definitions starting with Y 3 terms start with the letter Y. Yahoo Founded in 1994 by David Filo and Jerry Yang at Stanford University, Yahoo represents one of the leading… Yandex Yandex, a Russian multinational company specializing in the marketing of Internet products and services, is known for the… Youtube YouTube is a video sharing platform that allows users to watch, upload, like and comment on streaming videos.… Browse another letter A 15 B 12 C 10 D 10 E 10 F 3 G 31 H 4 I 7 J — K 10 L 12 M 9 N 5 O 2 P 8 Q 1 R 5 S 21 T 15 U 8 V 4 W 3 X 1 Y 3 Z 1