As long as the data is aggregated, it should no longer contain any personally identifiable information. Only "W # of people browsed to X url at Y time of day or Z number of times". Of course, there's no guarantee that it's done in this manner.
I think we should be left out by default and opt-in by request in exchange for something... maybe a free service, a free router/firewall or a credit against the service fee...
Why should they be allowed to collect data on me, without my consent and then make money from it?