At the end of every blog post in a series (50-100 posts), I want to write something akin to "Like always, email me for help..." (about 25-50 words). I also hear that duplicate content is an SEO sin. I figure that I can have an AJAX script load this at the end of every post, but that feels like overkill.
Is there a way to tag a section to not be considered as "part of the document", (i.e. to not cause problems if repeated on many pages)? Alternatively, is there a different solution to this?