Kien Nguyen

This is a simple plugin to mirror sites in WP Multisite installation(s). It can be used to populate multiple different WP Multisite sites with identical content. Posting on 1 site will update all other mirrors of it.
I originally put this together for a website that has 2 near identical versions, one paid and one free, both are WP Multisite installation with multiple subsites. I’m posting it here so it can be useful for other developers.
Some requirements: * The destination site and the site being mirrored must be in the same database. * Requires some working knowledge of WP database and WP in general (to use this and be able to mod it to your needs).
Git repository: https://github.com/kien/wordpress-multisites-mirror
Issues tracker: https://github.com/kien/wordpress-multisites-mirror/issues

WP Multisite Mirror

Populate multiple, different WP Multisite sites with identical content from the same database.

joetan

This WordPress plugin allows you to use Amazon’s Simple Storage Service to host your media for your WordPress powered blog.
Amazon S3 is a cheap and cost effective way to scale your site to easily handle large spikes in traffic (such as from Digg) without having to go through the expense of setting up the infrastructure for a content delivery network.
Once setup, this plugin transparently integrates with your WordPress blog. File uploads are automatically saved into your Amazon S3 bucket without any extra steps. Once saved, these files will be delivered by Amazon S3, instead of your web host. Any image thumbnails that get created are saved to Amazon S3 too. You’ll also find an “Amazon S3” tab next to your regular “Upload” tab, which allows you to easily browse and manage files that were not upload via WordPress.
<h3>Documentation</h3>
If you need more help installing and configuring the plugin, <a href="http://code.google.com/p/wordpress-s3/wiki/Documentation" rel="nofollow ugc">see here for more information</a>.

Amazon S3 for WordPress

Allows you to mirror your WordPress media uploads over to Amazon S3 for storage and delivery.

WP Multisite Mirror vs Amazon S3 for WordPress