[DNSB]

I tend to read those interstitial stories when I run across them but they've seldom been important to the series. No changes in canon, no major new characters being added. For the most part, they tend to concentrate on relatively minor characters to fill in their story lines mentioned in the main series. I enjoy collections of short stories such as the Grantville Gazette/1632 & Beyond books even if the stories there seldom mentioned the major characters in more than a passing reference. If they hadn't existed, I would still have read the 1632/Ring of Fire series.