Is there a legal reason for the tag line &quot;The post XXX appeared first on blog YYY?&quot;
<p>Recently, I noticed that every blog is including a line at the bottom that says:</p>

<blockquote>
  <p>The post XXX appeared first on blog YYY </p>
</blockquote>

<p>where XXX is the blog post in question and YYY is usually the post owner's blog (as opposed to someone else's blog). It looks like it is giving credit to its own blog.</p>

<p>My question is if there is any legal reason for doing this. Does adding this line gives the contents more protection? Or is it for other reasons such as SEO?</p>

<p>Look at the bottom of this site - you'll find a Creative Commons "cc by-sa" license. That's Attribution Required, Share Alike. The tagline suggests that the blog is republishing similar CC-licensed content with an Attribution requirement.</p>

<p>So yes, it looks like the tagline is there for a contractual reason.</p>

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