I've been using del.icio.us for about a month now, and I've found that I am bookmarking less locally. It's really cool to a. be able to bookmark stuff in one spot; and b. share those bookmarks with anyone that cares.
I spent last night hacking together a python script (why python? because I wanted to learn it) to integrate my del.icio.us links into my blog, kind of as a link blog. I'm not sure that it's in the format that I want, but I think it's a Good Start (tm).
Hopefully it doesn't fail when it runs at 0:05Z daily.