plc90210 - 7:52 pm on Jul 3, 2013 (gmt 0)
I don't think this should be considered spam as long as all the sites have quality content and clean link profiles. The company I work for has a blog/news site that ranks around #7-10 for a query that the main company site also ranks for at #2. The blog has lots of quality content on it with a natural/clean link profile and it links to the main website. No spam done on either site. Nothing wrong with that, IMO.