Social bookmarking systems are spreading these days. The most popular one seems to be delicious .. People store their bookmarks, each bookmark has a set of keywords helping fast research.
Few days ago i found another one, Simpy. Don’t confuse with a software of the same hosted on SF. Simpy’s killer feature over Delicious is its circle system. Depending on the bookmarks you store on the system, you can find people like you, who have the same concerns. That’s really fun :-) Moreover, one can subscribe to other’s to track new bookmarks additions and so on …
Hopefully Simpy integrates nicely into your browser, using a bookmarklet. You can also upload your WhateverBrowser bookmarks file to populate your online bookmarks. Alas, Simpy’s website is not very fast, i guess this will change in near future.