Looks good, the only thing I hate is the 'Free during BETA'. It makes me wonder how you're going to keep going, I'm worried you'll become a key part of my sales process but then one day, disappear.<p>Take my money straight away, seriously, I don't care that it's BETA, take my money! Don't be scared, you're creating value for me.
Something about chatting with clients or prospects on someone else's page/domain bothers me. I think your pro plan should have an option to brand the chat page with your client's own sub/domain.