This is very inspirational! Actually I have something similar in mind- 1. to allow subscribing to friend's or network's lists. and/or 2. Make it a 'window' to y

This is very inspirational! Actually I have something similar in mind- 1. to allow subscribing to friend's or network's lists. and/or 2. Make it a 'window' to your search experience. So it's privacy focused personal/social logic that offers you Google or any search engine that way you prefer. I think PageRank is not enough (or may be too much) for me...