There is no active filtering required if you don't store anything. I don't understand why this is so hard to grasp. You can learn as much as you want as long a

There is no active filtering required if you don't store anything. I don't understand why this is so hard to grasp. You can learn as much as you want as long as you don't store it or provide that information to a third party. I believe our industry has too long gotten away with a "store everything" mentality. I have zero sympathy for web sites which slurp up everything from their visitors.