I'm planning to purchase this plugin since it looks great.
May I ask these questions:
Is this great server consuming?
Is it better than ajax chat?
Will it slow down my website?
How to add chat bar link floating at the bottom of the page (like facebook) when you click the chat will appear and load in the current page? (like facebook)
Lastly, I don't want it to be added on groups, I only want to add it on a specific page, how to do that?
*Tell me if all these are possible, I'll buy it right away.