# Black and White lists
Read a full guide about creating white and blacklists (opens new window).
# What are these lists needed for?
One can save profitable and unprofitable parameters, sources, networks in these lists. They are easily exported for advertising networks.
# Labels
Keitaro allows to mark the following parameters with labels:
- Sub ID 1..15
- Source
- Creative ID
A green label sends the parameter to a whitelist, a red one - to a blacklist. When importing a new list, the labels are automatically added to the appropriate parameters. You can also filter parameters based on the labels they have.
# Where can the label's be put?
Go to the campaign's report. And then to one of the metrics which support labelling.