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.
I found a lost cat. Please share this.
I'd like you to spread this information.
拡散 means 'diffusion' or 'spreading' in general, while 拡散希望 is specifically a request to share something on social media.
シェア is a more general term for sharing content online, while 拡散希望 is a direct plea for others to help spread the word.
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.