Add rich text editor(s)… the right way (www.dev4press.com)
Adding rich text editor, like the one used for the post editor, was a really big problem in WordPress. And while there were some ways to do it, it was never working as you would expect it, there were too many issues and conflicts. But, with WordPress 3.3, all that changes.
Getting Started with the WordPress Transient API, Part 2 (wp.tutsplus.com)
The WordPress Transients API is a powerful (but really-easy-to-use) aspect of the WordPress API. Generally speaking, it makes it really easy to store data with an expiration time, and makes it really easy to take advantage of various caching plugins to ultimately increase the speed of your site.
How To: Upload Media via URL Programmatically in WordPress (theme.fm)
WordPress themes and plugins sometimes need to download files from third party servers, like images, documents, archives, and more. A Flickr image browser is a great example, where you wouldn’t want to hotlink to the images on Flickr, but rather download them to your own. Note that file_get_contents is not the way to go, so in this post we’ll talk about two more WordPress friendly ways.
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