Hi nlbrt,
Welcome to 5 Star.
"We'd like to reuse some where possible on other sites"
Are you talking about reusing your own content on other sites you own or using other peoples article and re-writing them. If it's other people's content you have one set of rules regarding copyright issues. Not saying you plan to but IF you scrape other peoples content they can get you in trouble with your host and even possibly get your site shut down. Then there's the duplicate content search engine issue which has it's own set of criteria.
Here's the most comprehensive article about duplicate content
from the search viewpoint, written by one of our resident experts.
Duplicate Content: It’s Not What You Think!