Stiqr is an on-demand wysiwyg editor widget for your website. Stiqr lets you design your site in a stick and place fashion just as you do with Photoshop, Fireworks, and Quark Express. But all from your browser.
The basic premise is that you can add various widgets to your website (pictures, texts, shapes, etc) directly from your browser and save the changes for everyone to see. It also works with your self-hosted WordPress installation by adding a small JS.
This can be big.