>You've to subsceibe to Chatter forum. You'll find 'Universal Thread related topics' category under that forum. To practice with message formatting you can use Preview button.

Thanks Sergey, didn't think about using the preview button. But, if I select "New message", there is no 'Chatter' forum. The same goes with search messages.. I've looked about 10 times and have not seen it.. :-), am I missing something??
thanks,
Daniel