The landing pages are way to over cluttered. You should choose an objective for the page and then eliminate all other possibilities. So for the increase your blog comments one.
Remove all the links from the page. All of them if they go anywhere but to the shopping cart for buying blog comments remove them.
The less opportunities a visitor has to leave the page that your selling something the less they will leave which means the more they will buy your product.
The headline needs to be much larger.
Increase Your Blog Comments should be the first most obvious element on the page.
Put the testimonial on the left where all the links are (remove the links) and take a picture of a customer or ask for one to get sent in and place it above the testimonial.
Real pictures sell more then stock photos so don't put up a stock photo.
Make your conversion buttons (buy now) bigger and more obvious also there should be a quick buy form above the fold (meaning in the visible area of the browser when you first enter the site before having to scroll).
Once you have something you like set up go to:
https://www.google.com/accounts/Serv...Dreset%26hl%3D
This is the Google website optimizer tool with it you can tweak the title run a test that compares the two that will get you the optimal title. Or it works with any element of the page the whole idea is that its A/B testing elements and it works very well just try to use it you will find out quickly how useful it is.
Good luck!