To create a Label Stamp, you first need to go to the domain you would want to stamp. If the domain does not yet exist, you can simply add it to our database.
When you're viewing your desired domain, you can then 'Add a Stamp'.
You start off by picking a Label, and then defining how strong the label applies. When selecting a binary label, the value must be 0 or 100.
Currently, we only collect data on Trackers & Malware. By narrowing our field we can focus more on the system and add additional labels lateron. Have a look at all our Labels.
Most sites, such as semantic-ui.com, do not serve ads and track their users directly. Instead, they implement 3rd-party domains who do the job for them. Take a look
If you want to contribute it is highly advised to use tools such as uMatrix. It shows 3rd-party requests of a domain, as shown in the above screenshot.