once you allow someone to read data, it has been given away.

even if its only retained until buffer refresh, its still given away.

if its read frombuffer space and transformed into a persistent structure, its a gift that indefinately keeps giving.

but if facebook/google are the buyers, they do not violate this law... the law seems to focus on the sale & giving of this data... not the reception. This means that they just need a non-Massachusetts based data broker to sell them the data, and then they can store that data to make advertisement decisions (so long as they do not forward it along)