How-To: Format your iChat Profile with Colors and Fonts.
Apple’s iChat profile entry thing for AIM is very basic. Most users assume that only Plain-Text is allowed… but they are mistaken!
AIM for Windows has a formatting toolbar on the profile editing screen… so new Mac users always feel limited. However, as with Chat windows, you can press Apple+T and change fonts, colors… insert symbols… basically do whatever the hell you want. (or just go up to the ‘Format’ menu) Works great, be sure to check this out.