Here's an easy way to create simple sticky notes for your site. Add some code similar to the following to your style sheet (or put it on a code embed page and include it):
Then on a page put:
Here's a sticky note...
You can put pictures in too, and line returns:
Here's a picture...
To make it even easier to use, consider adding a couple new markup rules like the following to your config file.
MarkUp('block', 'stickyend < div', '/\n?<\/sticky>/', '</div>');
Then you can just use markup like the following: <sticky>Some text...</sticky>