expression, noun
please share; please spread; retweets welcome
A set phrase used in social media posts to request that others share or retweet the content. Often appears as a hashtag or at the end of a post.
迷子の猫を見つけました。拡散希望です。
I found a lost cat. Please share this.
この情報を拡散希望します。
I'd like you to spread this information.
Compound of 拡散 (diffusion, spreading) and 希望 (hope, request). The phrase likely emerged with the rise of social media as a concise way to ask for shares and retweets.