Just thought it would be interesting to read if you are planning to add Live Helper Chat to your website.
(Scaling Support: Why We Removed Our Phone Number From Our Website) - http://wistia.com/blog/scaling-support-why-we-removed-our-phone-number-from-our-website/
Although they used different Live Support you can do basically the same with Live Helper Chat for free
Developing application takes a lot of time. You can support application by donating. There is no company behind this application and it takes away my free time. Every donation matters and does not matter how small it is!