The whole purpose of my creating an account in the first place was I didn't see any draconian policy against chat scripts. In fact the word "chat" appeared nowhere in the TOS. Now I'm seeing conflicting information here - some threads say "no" and others determine some types such as "shoutboxes" are fine. I need some clarification about what exactly a "chatroom" is, in more useful detail than "they're too hard on the server". Exactly what about these "chatscripts" makes them unwanted?

edit: The more I think on it the less comfortable I am with the whole situation. I can't trust someplace that's missing such an important level of transparency and accountability. I won't be recommending Zymic, sorry.

Basically, on signup there is a list of applications / scripts which are prohibited. Chatrooms is one of such.

Basically any script which causes an unreasonable amount of requests on the server is not allowed.

Tagboards are not allowed either, these refresh on a designated offset and each one of these is a request, the exception to chat rooms and tagboards being allowed are those which are embedded, provided by a 3rd party, for example:

http://www.shoutmix.com/
http://www.meebo.com/rooms/

xat.com
Is it allowed?

That's fine too as it is embedded.

so we just can't create our own?

correct, you can embed chatrooms, and not host one itself here on zymic (e.g. use a chatroom script that uses zymic's resources - database etc)