First off, if you have an issue with the other thread, then post it there. As for the two weeks, I was out sick for two weeks but I didn't figure you or anyone else wanted to know that, sort of the TMI, which I've tried to avoid doing anymore.
I'm looking at the recommendations that were given on the firewalls, I'm not done with that yet, so yes, I should have been more clear there.
PCI compliance deals with Credit Cards, that has absolutely NOTHING to do with chat software. I'm not asking you to brainstorm, I asked for recommendations, if you don't want to give one, fine no harm no foul; just don't comment.
To clarify this, I am looking for a live chat product for the customers to communicate with customer service. Not, use IRC.