Looking at this information below, copy pasted from Yahoo! Messenger Developer site, I am intriqued to install YM8.

The Messenger Plug-in SDK is a JavaScript and C++ API that you use to create add-ons with collaborative features that can run inside Yahoo! Messenger. Plug-ins run in the main Messenger window, or as part of an IM conversation. Yahoo! users can download Plug-ins from the Yahoo! Messenger Plug-in Gallery. Create plug-ins that are as simple as an HTML web page, or as sophisticated as a map collaboration tool that uses ActiveX, Flash, DHTML, AJAX or any other browser-based technology

Ugh, Javascript is so sexy!

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