Per ZaZaChat
EULA (2.8) you must purchase 1 operator seat per each 2000 daily visitors to your website.
To avoid account termination and save on ZaZaChat subscription charges, please install ZaZaChat code with Visitor Tracking disabled. To do that please append T=F parameter to the end of ZaZaChat HTML code installed on your website. Please see example of ZaZaChat HTML code below showing where T=F parameter should be placed:
<!--start zazachat-->
<div id="zazacontainer" style="display: none;">
<table cellpadding="0" cellspacing="0" border="0">
<tr><td align="center"><script language="javascript" src="https://www.zazachat.com/LiveChatClient/scripts/zazamagic.aspx?div=&zimg=17&zazac=ACCOUNT_ID&iv=&iwidth=153&iheight=35&zzwindow=0&custom1=&custom2=&custom3=&t=f"></script></td></tr>
</table>
</div>
<!--end zazachat-->