Avk, it is offtopic but I think your signup form (which asks for credit card number) might scare a normal user into believing that his data is not safe. The browser says that HTTPs page contains some unauthentic elements + the fields where you ask for card information do little to build confidence.
Asking for credit card information is a huge thing and either show in the form that you are concerned about security or better still use an external trusted vendor such as PayPal or Authorize.net
We recently added a script include that referenced the google AJAX api via http instead of https. That was causing the scary message. It's been fixed now.
I agree we need to add some copy and badging to reassure the user that we store all cc information securely through our payment gateway.
Good luck on this! I first heard of you through Sean, and the idea itself seemed to definitely have some legs - enabling live site collaboration should print cash. I do wonder about how the product is defensible. If I have one piece of advice, perhaps in follow up postings, add some lessons learned, inner links, and all that goodness that brings you here.
Asking for credit card information is a huge thing and either show in the form that you are concerned about security or better still use an external trusted vendor such as PayPal or Authorize.net