Responses to direct marketing are dropping in general. More and more people just throw mail away - especially unmarked mail - without opening it.

They all find out that you opened the mail and they get an invisible tracking number, so if you go to a store ... that number is reported to them and they can build that information into a database,

It's intolerable that e-mail can be used to silently zap a name tag onto you that might be scanned by a site you visit later. It's like secretly bar-coding people with invisible ink,

A common tactic in direct mail is to disguise the nature of the solicitation and send you something that doesn't indicate what's inside, to make you open the envelope. People aren't opening the 'mystery envelopes' right now.

One of the porn industry?s major marketing tools for making that enormous profit is e-mail. And many of the e-mails they send are hitting the in-boxes of children and teens.

Three or four years ago, [e-mail marketing] was quick, easy and cheap. Now, it requires a lot more sophistication, knowledge, and dedication ... CAN-SPAM took a lot of practitioners by surprise ... some large companies actually put their e-mail projects on hold.