Would Exchanging Cookies Defeat DoubleClick?

An Anonymous Coward asks: "After reading all the articles on cookies, DoubleClick, etc., an idea occurred to me and i thought i'd throw it out to the community to comment/flame and/or hopefully implement: since privacy is compromised because cookies *correlate* you with where you've been and other info, would it be feasible to host a "cookie exchange" server and application? e.g. you'd run this app before you surf, and it would reach into your browser cookie jar and *exchange* your DoubleClick cookie with somebody else's who is also running Cookie Exchange. Repeat for each site you wish to remain anonymous for. It seems that this would be more effective than disabling cookies, as it would mess up DoubleClick's correlations and tracking - you'd never have the same profile from day-to-day!" While an interesting thought. It doesn't exactly address the problem. I can imagine this making even more SPAM because one user's tracking profile now contains useless information from someone else's cookies. Would this be a good idea or even a fun way to protest DoubleClick?