For all the decrying of the Can-Spam Act that went into force a year ago, it turns out to have had some positive effects. Spam is down about 10 percent, according to the DM News report on the topic. And email marketing businesses that are staying afloat seem to be the ones providing the better of the spam compliance features. This, in turn, is leading to better email marketing that employs more sensitivity and intelligence, which might explain why email marketing performance has been improving by some email measures.