Wp-Wikipedia-Excerpt

The basic idea here is that you can easily link to the wikipedia entry for a given topic by putting the [wikipedia]topic[/wikipedia] tag into your post. The tag is replaced by a link that executes the wikipedia search form for that topic.

The plan is to augment this with a mouseover popup containing an excerpt from the wikipedia page.

1. Upload the wp-wikipedia-excerpt.php to the \wp-content\plugins directory
2. Activate the plugin through the Plugins menu in WordPress