Protip #3: when all else fails, they will use your IP address to target you. E.g. I usually use Firefox with NoScript. I frequently exit Firefox; when I do I c

Protip #3: when all else fails, they will use your IP address to target you. E.g. I usually use Firefox with NoScript. I frequently exit Firefox; when I do I clear everything using "Clear history when Firefox closes". When I want to visit a site that requires JavaScript I switch to Safari. I'm just as aggressive in Safari in clearing my history. Consequently, about the only ads I do see (in Safari) are clothing ads for teenage girls. I have two teenage girls, they have their own computers, so it must be the shared IP address. So far it hasn't been worth the hassle for me to switch to a new IP address from Comcast more than about once a year. By default my firewall asks for the same IP address and even if it didn't, Comcast will use my firewall's MAC address to give me the same IP address.