(b) You will not sell, resell, redistribute, sublicense, or transfer any Program Content or any application that uses, incorporates, or displays any Program Content, PA API, or Data Feeds. For example, you will not use, or enable, or facilitate the use of Program Content on or within any application, platform, site, or service (including social networking sites) that requires you to sublicense or otherwise give any rights in or to any Program Content to any other person or entity, nor will you create links formatted with your Associates tag for, or display such links on, a site that is not your Site.
Spam is the biggest threat to organic search engines, whose goal is to provide quality search results for keywords or phrases entered by their users. Google's PageRank algorithm update ("BigDaddy") in February 2006—the final stage of Google's major update ("Jagger") that began in mid-summer 2005—specifically targeted spamdexing with great success. This update thus enabled Google to remove a large amount of mostly computer-generated duplicate content from its index.
Emails triggered by milestones, like anniversaries and birthdays, are fun to get -- who doesn't like to celebrate a special occasion? The beauty of anniversary emails, in particular, is that they don't require subscribers to input any extra data, and they can work for a variety of senders. Plus, the timeframe can be modified based on the business model.