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In what way?Do hosted chat sessions work well or can their be problems with them in terms of technology
Adding live chat script is piece of cake; all you have to do is to locate any good service provider free/paid, get their code and place it on all pages where you want to show the chat widget. I use Snapengage and PureChat at my sites and they are good enough in handling lets say 200 chats per day.
I've had 100s of chats and never had a problem or lost connection.Reliability - they come to our web site - great and then they click live chat and ...
Or other things that I may not have thought about