GA is the keys to the kingdom for an online business...conversions, cash flow, ad sense, ad words...it is all there. You'll also need to offer a very clear and compelling value-add over Google Analytics for a serious person to even consider it. Heck, I don't even use 1/2 of the stuff GA gives me-- why do I need another service? You've got to answer that question.

You should also charge money for the service....I'd actually feel more comfortable about using it.

Also, the site lacks basic things like a location address, privacy policy, an obvious About Us page, and a TOS that protects my data.

The about page might be useful for you:

http://trendly.com/about/

Agree; I'd rather see it in action on a dummy/demo site first.

Agreed that the front page is light on info/screenshots etc. Did you click the "how it works" link?

You may want to include a link to the "how it works" section from http://trendly.com/preview/.

When I went to the site, I clicked "try it now" before I read to the bottom of the page, and once I got there, I didn't want to sign in. Maybe say something like "Not ready yet? See how it works" or something like that.

Agreed. Will do.

Done.