• What are the advantages of storing, sharing, and tagging web content this way? What are the disadvantages?

Delicious allows you to find some of the best resources on the Internet without having to go through all of the junk. It gives you a good system for organizing information from around the Net.
The only way of creating a profile is to include a link to your own blog, which makes it difficult to find persons with similar interests.

What do you hope to learn from CPL 2.0?

A Web 2.0 site allows its users to interact with other users or to change website content. I would like to learn it and use it in the future and be up-to-date.