It's hard to measure since we've seen engagement levels consistently rise over the past month, but we've also been doing a lot of OTHER work to increase engagement and bring people back to the site. For instance we've been driving community/discussions around specific teams on the site, sending out email notifications/newsletters, FB notifications etc, optimizing FB open graph- all of which have been pretty effective for engagement. It's still unclear whether there is a direct correlation between clarity on the landing page and longer-term engagement.
