Looking at my Google Analytics stats it looks like the visitors/members on my site don't use it either.
0.32% of my unique pageviews are the /recent-activity/ page.
31% of my unique pageviews are the /find-new/ (What was called 'What's New' but is now 'New Threads') page.
You can find these stats on Google Analytics at Content > Site Content > All Pages. Use the search feature to search for the following phrases; find-new/ and recent-activity/