First of all, that's a very nice landing page and I can see this being useful.

I love that I can post a comment anonymously and don't need to sign up. Makes for a very low friction experience.

Some feedback for the landing page - it wasn't clear to me at first that the Taku box that pops up there is a live example. Maybe you can make that more clear with some copy change. For example:

"This is a Taku Box. All users receive this message. You can even chat with them in the comments below. Scroll down!"

Another small design feedback - it wasn't clear to me at all that "Yodelling R2-D2" (currently the top comment) was a user. I thought maybe it was a caption for the image, or an example product name, or something else. I found it confusing. Maybe a small auto-generated avatar or even just an icon of a profile next to the names would help, something to signal to me that it is a username. Or maybe even get rid of the names altogether, since they are all anonymous.

Good luck!