'Delicious' is a tool similar to 'favourites'. It's like a bag where i can put all my favourite web pages. I can adjust keywords to these web pages. And these keywords are tags. I can, later on, search pages described by others in 'delicious'with the same tags - thats how i can find information concerning one topic or area of topics. I can link my tags from 'delicious' with my weblog, so that people who visit my weblog can see in what topics I'm interested in.