If any of you have ever heard Just A Minute on the radio, Nicholas Parsons will hand out points for interuptions (even when made incorrectly) if the following comment makes the auidiance laugh.

Maybe a little leeway for amusing comments, as long as people don't over do it (and they don't from what I have seen on I:SB), or do so with horrible grammer. Which really is unforgivable.

Basically, I think that I:SB is perfectly okay as it is.