bpj50

Enter your Bitcoin address via the settings page and choose whether you want it to appear on posts/pages. A button will appear and, when clicked, an iframe is loaded with a qr code allowing your readers to donate to you.
100% goes to you and does so directly.
<h3>External Files</h3>
The plugin adds 4 externally hosted files to the DOM:
2 Image files 
1 CSS File 
1 (of two possible) Javascript files
https://bitcoinsberlin.com/wp-content/uploads/2013/01/button-loader.js
OR
http://bittip.it/cdn/button-loader.js
The files are identical. The file that is loaded depends on your protocol. If your site uses ‘https’ then the ‘https’ version must be loaded.
The button works like any normal web button including Twitter and Flattr buttons. You copy a code snippet into your project and when the project is run, CSS and Javascript is added to your head to activate the buttons.
The CSS is for styling the button. The Javascript performs several tasks.
<h4>What the Javascript does</h4>
1) Loads the ammount of donations via an ajax function performed on “htt://bittip.it” 
2) Attaches a click event to the button to open the iframe for donating 
3) Creates the outer frame of the popup
While these files could be hosted on wordpress, it is neater if they are hosted off site as the majority of users will have copied the snippit directly from the site, opposed to installing the WordPress plugin.
Full Support: 
http://bittip.it/wordpress-plugin/

Bittip.It – Bitcoin Donation Button

jmarreros

This Plugin allows to use an external image as Featured Image, this can be especially useful if you house your images in another location.
This Plugin is compatible with Nelio External Featured Image Metadata, so you can reuse your data in case you want to uninstall Nelio Plugin.

External URL Featured Image

It is what I was looking for: simplicity.

$external_image = get_post_meta( $post->ID, '_dcms_eufi_img', true );

Works well for me

Use an external url image as Featured Image for your posts, pages, and other kind of post types.

Bittip.It – Bitcoin Donation Button vs External URL Featured Image