If a site is available for free and is ad supported, the customers (that is, the ones buying the product) are the advertisers, the users are the product.
Nullify acts of congress? Aren't the amendments acts of congress as well? I think that's a pretty bad idea... remember it was federal law that fought the states when the south was trying to keep blacks as second class citizens.
A computer scientist is someone who fixes things that aren't broken.