The pricing link isn't at the top of the home page, but it is at the top of 'Features' and 'Get Started.' More over, the list of clients at the bottom includes some large companies. Surely you must realize that someone is paying for something here.

I think Facebook and Google have lulled us into a false, unquestioning expectation that online services are free; when really we should be suspicious of any company claiming to offer a free service.

"Learn More" then "Pricing" or any page that shows the product has the pricing link on the navigation bar.