Matt Wiebe

WordPress 3.4 introduced native Twitter embeds. You may not want to use these for privacy–or other–reasons, while still allowing for other embeds. This plugin disables only Twitter embeds.

Disable Twitter Embeds

Disable the native Twitter embeds introduced in WordPress 3.4.

Sérgio Santos

Registers an oEmbed handler for Google Docs and adds it to the whitelist, allowing all users who can write posts/pages to embed documents, spreadsheets and presentations.
<h4>Usage</h4>
To embed a Google Doc into a post or page: 
1. Open the document on Google Drive 
2. Select the Publish to the Web under the File menu 
3. Then copy the link and paste it into the content area. Make sure the URL is on its own line and not hyperlinked (clickable when viewing the post)
For example: 
 https://docs.google.com/document/d/abcdefghij/pub
Another option is to wrap the URL in the [embed] shortcode: 
 [embed width=”860″ height=”640″]https://docs.google.com/document/d/abcdefghij/pub[/embed]

Google Docs oEmbed

Embed Google documents, spreadsheets and presentations in your posts or pages.

Disable Twitter Embeds vs Google Docs oEmbed