Medium轉貼文章對原文的SEO影響
基本上,Google會懲罰有重複內容的網頁。若想把其他地方發表的文章轉貼到Medium上,請使用Medium提供的官方匯入工具,以此方式轉貼的文章,Medium會自動加入「canonical link」,標示原始文章網址。
如此一來Google索引或計算SEO積分時,就會把Medium上文章的流量累加在原文網址上。因此把文章匯入Medium,其實不僅多一個文章發佈管道,而且還可累加原文的SEO權重,一舉兩得。
要得到這好處,務必使用 Medium提供的匯入工具。

否則直接新增貼文、複製文字貼上,Medium絕無可能偵測原文網址。Google就會視為重複貼文、盜文,反而傷害了原文的SEO。
Medium官方FAQ原文如下:
SEO and duplicate content
Canonical Links
When posting content to multiple platforms at the same time (such as your website and Medium), it is important to make sure a single source of that content is the ultimate authority. Medium’s official tools for cross-posting (including the Migration tool, Import tool, and Wordpress plugin) add the source it is importing from as the canonical link automatically.
Search engines use canonical links to determine and prioritize the ultimate source of content, removing confusion when there are multiple copies of the same document in different locations. Sites that publish an overabundance of duplicate content without indicating a canonical link may be penalized in search engine rankings.
Medium’s publication and cross-posting pathways automatically add canonical links to protect your original content posted offsite. This means that Medium can only boost — not cannibalize — your SEO.
It is the responsibility of the webmasters and content developers for each individual site migrating, importing or cross-posting to Medium to make sure they follow search engine quality guidelines and best practices on their own sites. Medium will always do our best to give credit to your original source by use of a cross-domain canonical link.
Please note: if you are just copying and pasting content into a Medium post, Medium cannot determine the canonical URL. Whenever possible, use the official import tools or email us if you need corrections made.
以如下Google Blogger文章為例:



匯入結果:

文章最後有 canonical link 標示原文網址:
Originally published at www.sophiesoup.site on July 6, 2018.