In exciting news Me.dium for IE7 is to be released (hopefully by the time you read this post) and they have announced a widget that can be added to your site so “you can see the real-time activity of your community – the people who are reading your blog or have recently visited it.” [Medium Widget Blog].
Both Sandi’s blog, Spyware Sucks (the leading site imho on everything related to spyware, malware etc), and this blog are featuring the pre-release widget. In my case it is in the lower left of the screen – take a look at what other browsers are doing now!