Chat windows from Gabbly are best on pages where you want people to talk to each other. Instant messaging from Meebo is best on your profile page, where you want users to contact you directly.
To add chat to a page, or instant messaging to your profile, click on the "EasyEdit" button and the toolbar will appear.
Place your cursor where you'd like to display your chat or messaging window, and click on the "Widget" button in the toolbar.