Sgt_Kickaxe - 6:00 pm on Oct 4, 2013 (gmt 0)
I'm fighting this to a degree on a site right now. The site is about widgets but one particular article is about what you can do with this widget and Google thinks my site is about that activity almost exclusively. If I post content about things not related to that activity they mire in traffic mediocrity but if I relate it to this one activity watch out, the floodgates open.
The problem, there are many activities related to this widget which people actively search for and I feel boxed in with just this one. Psst, Google, my site is about much more than this one activity!