…but an expensive one. After 5 minutes you realize you already need more basic features but they are all premium. At least they could have offered the possibility to customize messages in your own language, but that is also a Pro feature. It’s buggy with Firefox and smooth on Chrome. There’s also the problem of the user not able to close the conversation(s), this way that stays on on every new visit to the site… it may be logic to someone, not to me.
However, the technology and performance is something I have never experienced before for how good it is.