I'm kicking myself for taking so long to try out del.icio.us.  I've been hooked overnight.  If you don't use it, all I can say is that you are missing a huge opportunity!

Benefits:

• There's the obvious benefit of being able to access your bookmarks from anywhere.
• Deciding whether or not to bookmark something to keep from cluttering your bookmarks is over.
• Seeing how many other people have bookmarked the same pages and seeing what other pages around that topic they have bookmarked to expand your own research.
• Reading what others have to say about pages.

It's these last two items that make del.icio.us an indispensable web analytics tool.  So go get a del.icio.us account and listen to your customers.

Tips:

• Marketing - See if del.icio.us is a viable marketing tool for your website.  See if your website's key pages are tagged in del.icio.us and tag them yourself with plenty of appropriate tags and thorough notes.
• Research your competition - Look up your website's key pages in del.icio.us and see competitors' pages that are being tagged as well.