Microsoft recently issued their version of Google’s PageRank called BrowseRank. This innovation is different than other ranking ideas because it is based on user behavior. Jeremiah Andrick of MSN LiveSearch Webmaster Center tells how they wanted to place more emphasis on the customer instead of rank. Watch as Jeremiah explains more of Microsoft’s efforts right here on WebProNews.

Me.dium on the other hand (http://me.dium.com/search) is processing user’s clickstream data in real-time to create a different lens based on what’s going on now. e.g. do a search for John Edwards on Google or Live, and you get johnedwards.com and wiki/johnedwards. Do the same search on Me.dium and you learn that today people care about his love child, pictures of his mistress, etc.
The difference is real-time (what people are browsing now) vs. historical (what they browsed in the past). Social vs. Old School. Check it out. http://me.dium.com/search.
Is browse rank also based on the backlinks, like that in google page rank?
John Edwards on Google or Live, and you get johnedwards.com and wiki/johnedwards. Do the same search on Me.dium and you learn that today people care about his love child, pictures of his mistress, etc.