Whosonline is a very useful feature. It gives you a quick view of who are viewing your website, where (search engine, direct link, referral site etc) they are from and what they are doing. It also supports page auto refresh. Check screenshot for more details.

We added product review and product rating to the product detail page so that customers can write product review. You will receive a notification email when a review is submitted. In the store admin you could approve, edit or reject the product review as you wish. Check the following screenshot.