We teach fully online and have gotten all of our colleagues and students to use WordPress.
One of the features we use (and need the most) is Meebo because it seamlessly integrates into our course blog Announcement pages that we create in WordPress. We know that there are all kinds of options out there, but NONE work like Meebo does. It is really putting us in a bind.
PLEASE PLEASE find an alternative widget that can replace Meebo ASAP!