There are two methods you can use to allow participants access to your Survey. It should come as no surprise that with VerticalResponse you can send an email to invite participants; these will be identified as Invited respondents in Survey reporting. To Invite participants click the Invite Participants link in your Live Survey under Survey Actions.
You also have the option of placing a link on your website to allow for anonymous responses; these will be identified as Anonymous respondents in Survey reporting. This link can be found on the Survey Dashboard under the name of your survey (note: if your Survey is set for only invited participants this link will not work).