We understand not wanting to disrupt someone's experience on your website. We like to think of our Nuggets as an extension, rather than an interruption of the website journey. One way we do this is by employing several failsafes, so as to not overwhelm visitors:
1) If a visitor converts, they will not see that Nugget again
2) A visitor cannot see more than one Nugget per page
3) A visitor cannot see more than one Nugget per session (unless a campaign has specifically built in a second level where the delay is set to SAME SESSION)
4) A visitor will never be eligible to see more than 1 campaign per session - if someone is eligible to see more than one - you will want to manually prioritize it so our system knows which campaign and what Nuggets to serve first.