Jenstar - 8:38 pm on Jan 17, 2004 (gmt 0)
If the newsletter is not in any database, there definitely is the potential for spamming if the ads are inserted directly into an emailed newsletter. The potential for publishers to pick and choose high money keywords would cause many to opt-out of AdSense completely, if Adwords doesn't have an option for advertisers to opt out of all email campaigns. If they get lumped together, I believe there would be a large drop in the number of advertisers who are not willing to see their ads in email, and are thus forced to opt out of all AdSense content sites completely. They would have to differentiate them for the success of the program.