Have you ever noticed that many websites mass sms service include a list of questions and check boxes at the end of their online signup forms? You have to check a box next to any number of newsletters or ebooks you'd like to receive in addition to the one that brought you to the page to begin with. In some cases, a tricky marketer may change the wording to say that you need to check off the box if you do NOT want to subscribe to mass sms service additional newsletters. In many cases these services aren't necessarily owned by the same company you signed up with at the start. Many webmasters use co-registration as a mass sms service method for promoting the products of marketers who are participating in joint ventures. You should treat co-registration requests mass sms service the same way you would treat a request for a joint venture. If a webmaster asks you to include registration form for his newsletter on your landing page you'll want to mass sms service research the product he is offering and determine whether or not it's something you're comfortable promoting. The same applies if you're asking someone else to include registration information for your mass sms service products on their page. It's important to make sure the opt-in process mass sms service is as simple as possible when using co-registration tactics. A web user registering for one service won't appreciate opening his email inbox to find a flood of "click here to confirm your subscription" messages. It's best to avoid double opt-in mass sms service features when using this type of marketing technique. Never make your clients jump through hoops to get the information, whether it's an eBook or newsletter, that you've mass sms service promised. This only frustrates new readers and causes them to immediately ditch your subscription.