This looks fantastic - I like the design and obviously I like the free. The interface is much more attractive than the standard SurveyMonkey and Google Forms options.

Two big questions come to mind. First, do you have or plan on an option for people who don't want to embed a survey but link to one outright? Second, do you expect to leave this up, and if it were to become heavily used do you have a plan for monetizing or are you willing to eat the hosting costs?

I ask because with a bit of reassurance that it will stick around, this looks like a nice, clean tool I have regular use for.