We have a few fail safes in place 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 ab;e 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.