內容簡介
### 總結：
MDI HTTP Referer Block 是一個 WordPress 外掛，用於讓網站擁有者標記從指定引薦來源網域抵達的訪客，並可選擇執行以下操作：
- 顯示包含引薦來源主機/路徑的小型通知（伺服器端）
- 隱藏特定元素（CSS 選擇器）
- 將被標記的訪客重新導向至不同的URL
- 使用伺服器端引薦檢測（PHP）和/或客戶端檢測（JS）處理缺少引薦標頭的情況
### 問題與答案：
1. MDI HTTP Referer Block 能夠讓網站擁有者做什麼動作？
- 答：標記從指定引薦來源網域抵達的訪客，展示內容通知、隱藏特定元素、重新導向訪客至不同URL。
2. 有哪些方式可以檢測缺少引薦標頭的情況？
- 答：可以使用伺服器端引薦檢測（PHP）和/或客戶端檢測（JS）進行檢測。
3. 使用 MDI HTTP Referer Block 外掛後會使用到什麼樣的 Cookies？
- 答：外掛會設置 mdi_syndicated_ref 這個 cookie，保存設定的天數資訊。
外掛標籤
開發者團隊
② 後台搜尋「Smart Traffic Source Filter for WordPress」→ 直接安裝（推薦）
原文外掛簡介
Tired of spam form submissions from suspicious referral sources? Want to block or redirect traffic from specific ad networks that send low-quality leads? Managing traffic quality shouldn’t require a developer. We made it easy!
Smart Traffic Source Filter gives WordPress site owners complete control over user experience based on traffic origin. By analyzing the HTTP referrer (both server-side via PHP and client-side via JavaScript when headers are missing), this plugin makes it easy to detect where visitors come from and apply different behavior—whether you need to filter spam, protect forms, redirect unwanted traffic, or optimize conversions for high-quality sources.
You can define specific referrer domains or patterns, and when a visitor matches those conditions, the plugin can:
Display a small notification (server-side) showing the detected referrer host or path.
Hide or reveal specific elements on your site using CSS selectors.
Redirect visitors from certain sources to a different URL.
This gives marketers, advertisers, and site owners fine control over how different audiences see the site.
Example use cases:
Hide contact forms when users arrive through syndicated search traffic to prevent spam or low-quality leads.
Hide pricing details when a user comes from social media to encourage engagement before pricing exposure.
Redirect visitors from affiliate networks to a dedicated landing page.
Show a simple banner confirming that the user arrived via a partner campaign.
The plugin sets a tracking cookie (mdi_syndicated_ref) to remember the detected source for the configured number of days, ensuring consistent visibility rules on repeat visits.
MDI HTTP Referer Block helps you tailor on-site experiences dynamically based on real visitor origin — simple, server-side controlled, and privacy-respecting.
For a full guide on blocking syndicated search traffic (e.g., Google Ads Performance Max), see:
https://mediuminteractive.com/how-to-block-syndicated-search-traffic-from-performance-max-campaigns-in-google-ads/
