Yes ! I am using FeedJIT from the first day of my blogging and i must say that this is a very useful thing from which i can get the correct idea about the visitors.
But there have some people who may want to hide the FeedJIT. Of course there have some reason that's why some users want to hide the FeedJIT from their visitors. But my suggestion is - please do not hide your FeedJIT because it can create some problem for your blog even FeedJIT authority can ban your FeedJIT account !