Just read a very clear article on Wired comparing all the major online bookmarking services. Having started collecting my bookmarks in delicious over two years ago I have found this incredibly valuable.
1. I can access my favorites from any connected pc
2. Search for relevant sites can be more valuable on a site like delicious - why? Because people have rated and saved the sites that actually worked for them!
So, as the article states, “online bookmarking just makes sense“!