We use Zopim daily. 80%-90% of guys from India looking for free info. It has 'macros' where you can hit 3 characters and it gives them a spiel about being happy to help, and to see this page about our prepaid block plans.
It's the remaining 10% that have actually been pretty good opportunities. But remember, we are only using it with Dynamics NAV & Epicor where end users tend to be 10m - 100m in revenues. I'd imagine the freeloader situation would be much higher with mas