Facebook更改計算方式，Page Impressions將下調？
最近外國著名的Social Media專家Matt Navarra在自己的Tweet上發佈訊息，指由10月17－28日之間，Facebook會Roll Out一個新的改動，令計算Organic Page Impressions的方法不同。
Bad news, social media managers…
Facebook is changing how it calculates organic impressions meaning it will likely show a decline.
Changes rolling out between Oct 17 – 28 pic.twitter.com/3QHuUqbCDZ
— Matt Navarra (@MattNavarra) October 17, 2019
這個Update有幾個重點：
先看Paid Impressions：
An impression is counted as the number of times an instance of an ad is on screen for the first time. (Example: If an ad is on screen and someone scrolls down, and then scrolls back up to the same ad, that counts as 1 impression. If an ad is on screen for someone 2 different times in a day, that counts as 2 impressions.)
至於Organic Impressions呢，解釋就比較簡單點：
Impressions are the number of times any content from your Page or about your Page entered a person’s screen.
似乎分別就在乎Paid Impressions在一次Page Load之內，同一個人即使看了兩次同一個Posts，都只計一次Impressions，而Organic Impressions就沒有寫明這限制。換言之，在News feed上來來往往，讓同一個Post 「Enter the screen」幾次，其實就是幾個Organic Impressions。
不過以上都只能算是猜測，因為我找不到Facebook的Official Announcement，所以就靠Matt的消息人士料來推斷。
相關文章：
Facebook廣告20% Rule回歸？
Facebook放棄Video Ads 10秒選項。2秒 vs ThruPlay如何揀？
Facebook專頁Inbox提供入數紀錄功能，KOL接生意更方便？
Facebook修改廣告Potential Reach計算法、以新Metric取代Relevance Score
Why am I seeing？FB令Custom Audience廣告更透明