Just an idea.

Sometime ago I added a link to my web site that provides the user with word definitions when they double-click a word. This feature would help people lke me who don't the vocabalary that others have. The site is called Answers.com. I have included the JavaScript they provided to access these definitions.

<!-- Answers.com -->
<script src="http://site.answers.com/main/js/web_answertip.js?ANSW.nafid=8" type="text/javascript"></script>
<span id="answerTipEnabled"></span>
<script type="text/javascript">ANSW.Trigger.showLogoIfEnabled("AnswerTips_landing_anim.gif","");</script>

If you wish to see this in action, you can try it on my site at http://www.glrsoftware.com. The banner called AnswersTips on the right is all I had to add.