speedypete

We are about ready to launch a service that has a broad appeal (think YouTube, Google, Office - something "everybody" uses).

We want to target different types of users, e.g. millennials, veterans, seniors, in our marketing, and obviously want to target the group that is most positive towards our service first.

What service would you use to run a survey among all types of users, to find out which type of user / demographic responds best to the service?