It's not obvious by looking at the pagekite homepage what the product does. Lots of focus on the benefits, but as a developer, I'd rather just know what it does and how to use it
I would even suggest taking inspiration from the clearly annotated three-panel diagram on the showoff.io homepage - very clear and simple. I am guessing that pagekite might offer more functionality than this, but again, I am having trouble figuring that out.
Best of luck!