This depends solely on the number of people you want to survey: there are two really good control ways to manager user invitation.

You can adjust your invitation rate (the proportion of visitors that receives an invitation) in real-time. You can adjust the rate so anywhere between 10 to 100 % or you can choose the “automatic” option.

The feature allows you to invite all visitors if you are a small site (for instance a blog) or a very small proportion if you are a huge site.

In order to change your survey’s invitation frequency, you need to select your website/app from the media section, then click on “Widgets”. You will find a section called “Survey invitation frequency”, click on it and choose the settings you prefer.

When your visitors interact with the UserReport system in one way or another by participating in surveys, completing questionnaires or maybe rejecting to participate - we use quarantine to ensure that their action(s) are respected.

UserReport operates two different types of Quarantine-periods:

The concept revolves around respecting the user’s initial choice. If a visitor rejects to participate in a survey on a busy Friday afternoon on ‘website A’, they should not be offered the same survey 2 hours later on another website (‘website B’). Odds are that they still are very busy.

That is the reason we are operating with the concept of 'Global Quarantine'. If we get into peoples face 10 times every day - they will grow indifferent to the survey-invitations, and we will spoil the opportunity of engaging in a dialogue with those visitors. So we try hard to respect the visitors’ choice.

We are at the same time operating with several degrees of quarantine. Closing the survey-invitation window down is not as 'hard' a rejection as using the 'Reject' button.

The quarantine depends on 4 different survey scenarios:

Different actions result in different types of quarantines. The different lengths are based on our experience with minimizing the 'hassle' experienced by the users as much as possible and at the same time optimizing the answer-percentage.

Is this a bulletproof method? Yes, in most cases. But there might be exceptions.

The UserReport system might be prevented from setting its cookie if the user is surfing in "private mode" or using an ad blocker.

Also, if the UserReport cookie has been erased from the visitors' browser when revisiting the site, another invitation to the survey might appear. However, this happens quite seldom as the UserReport system operates with both regular and flash cookies as well as several other techniques that allow us to track returning users.

Please note that all cookies (and hence quarantines) are browser-centric.

Based on this, don ́t worry too much about turning up the invitation volume. You ́re better off focusing on the number of interviews you need to cover your research needs.