How do search engines like Google, Yahoo, and Bing treat duplicate content pages?

@jamison 

Search engines like Google, Yahoo, and Bing generally don't like to show multiple versions of the same content to their users, as it can lead to a poor user experience. As a result, they have developed algorithms to identify and handle duplicate content pages in a variety of ways.

Here are a few common ways search engines handle duplicate content:

1. Ignore the duplicate content: In some cases, search engines may simply ignore duplicate content pages and only show one version of the content in their search results. This can happen when the duplicate content is considered low-quality or spammy.
2. Consolidate duplicate content: In some cases, search engines may consolidate duplicate content pages into a single URL in their search results. This can happen when the duplicate content is considered high-quality and useful to users.
3. Penalize sites with duplicate content: In some cases, search engines may penalize websites that have a lot of duplicate content. This can happen when the duplicate content is intentionally created to manipulate search rankings or deceive users.

To avoid issues with duplicate content, it's best to create original, high-quality content for your website, and use canonical tags or redirects to indicate which version of the content is the preferred version for search engines to index. Additionally, it's important to regularly monitor your website for duplicate content issues using tools like Copyscape or Siteliner.