A lot of these DMCA agents for hire come from the porn industry. Our company has been attacked by Eric Green [1] with baseless defective DMCA notices (including notices to the ISP), to which we have not responded. Our legal counsel (a renown copyright lawyer) advised not respond, because the notices were defective (baseless). He pointed out however, that his cowboy background comes from the porn industry, that he expanded into other areas. The problem is that the copyright law doesn't provide for an adequate punishment for unscrupulous DMCA notices.