tkabber does not ignore empty messages (DoS bug?)

Gents:

One of my contacts appears to use a Jabber client named "neos". Whenever he and I are chatting, I get bombarded by a deluge of empty message windows. He isn't consciously doing this to me; it appears that neos is sending me empty messages for some reason.

As it stands, it looks like this could be a Denial-of-Service bug in tkabber. Somebody could start sending me a constant stream of empty messages and occupy my desktop with tkabber message dialogs. It'd take a while to squelch them because every new message window would grab focus.

So... suggestion/request: can tkabber ignore empty messages and messages where the message body is only whitespace?

Thanks!