I have an established site, 15 years old, with several pages of long tail keywords at position 1.0 according to Webmaster tools.
We haven't added much new content in the past year but want to start publishing one well researched article per week.
At a high level does it work best to publish articles that are related to the highest performing (traffic or revenue) existing content? Or is it better to go broader and publish on topics completely new topics still within the scope of the website but quite different than the existing subjects in hope of creating new, high performing subject areas?
I anticipate part of the answer being "Well what do your visitors want to read?" The answer is, I know what they are reading, but "they" is ever changing since the majority are not repeat visitors.
If I piggy back off of high performing existing content then I can link from and to those articles which seems like a healthy strategy. Introducing new topics would make for fewer inner linking opportunities initially.