This 'how to' comes to you courtesy of Tim Harvey who posed this question in the help forum:
"I want the same (text) information to appear on multiple pages. I should be able to write it up on one page, then some how include it in other Sites pages and have it display on each page (not a link, but the text). How do I do this?"
and then went on to find this neat solution for himself:
Use an Announcement page combined with multiple Recent Posts gadgets. Using a single 'post' on the Announcement page, that post then can be made to appear in other pages in the site.
While this is not as ideal as creating a page and simply including it in multiple pages so it displays in each location, using an Announcement page comes close.
Example - the text below is from Sample Announcement Page
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