It´s an interesting discussion. First there are some privacy issues, but let´s put that aside.

Google already has something like this if you are a heavy user of their services and products. It´s a little burried in your settings. Here is the url: https://myactivity.google.com/myactivity.

In this page you can search, browse, filter by product and range of dates of all your activities including navigation.

I fully understand the concept and I think it´s useful in some situations. But I really prefer a more controled way of organizing my bookmarks.

Both concepts can easily cohexists IMHO..