I have collected words and phrases used in 2channel (Ni-channel) and Nikoniko-doga,and divided them into five categories according to their characteristics: (1) grammatical,(2)phonetic,( 3) orthographical,(4 )vocabulary,and (5) style. As a result,I found that the orthographical category (inc1uding pictorial) has the greatest number of expressions,followed by the categories of vocabulary and style.