Can you block members from popping up in your keyword alerts?

[Shane H.]

I've got a few keywords set, some for the cities surrounding me.  One thing I've noticed is a few folks must have the same "City" keyword alert as well....they consistently post the same regurgitated reply to anyone asking about said city.

Is there a way to block this person or persons response when they use said City in their reply to the topic from popping up as a keyword alert?

Hope my question and scenario make sense.  Maybe there's an alternate way to do this however I've overlooked it.