What do you do with low traffic targets in PPV? Low as in 5-20 pops per day even when you're in 1st position.
Do you continue to let them reach 100 pops then decide if the results are statistically significant?
Or do you just kill them like a few days in, and they still have trouble hitting 100 pops to get make a decision?
If pops are spending close to nothing I will usually let them run until I see some statistical significance. However, that is only if that same campaign has high traffic targets too.
I would never waiting around for days to check out if a campaign spending $1 is worthwhile...
^ What Mr Green said