It's an interesting offering. The concept behind the product seems pretty sound. If the recipient does not know you, then you have to essentially jump through a very small hoop that confirms you are a real live human being instead of one of those bulk e-mail programs. This has always proven to be an effective antispam technique in mailing lists and discussion lists.  -   Ray Everett-Church     Quotes
It's an interesting offering. The concept behind the product seems pretty sound. If the recipient does not know you, then you have to essentially jump through a very small hoop that confirms you are a real live human being instead of one of those bulk e-mail programs. This has always proven to be an effective antispam technique in mailing lists and discussion lists. Ray Everett-Church