One of the Content Strategist jobs was even for Facebook:
"As a Content Strategist inside the Design and User Experience team at Facebook, you will be responsible for the overall content strategy at Facebook. This includes the development of style guides, feature naming, language creation for new and existing user experiences, and executing all day-to-day content needs."
Salaries also seem to be holding well. The average content strategist salary about the same as when I last checked back in December of 2008.