According to Courtney, in Library 2.0, tagging has its pros and cons. It is usually current, creates a community of users, and gives insight into user behavior. Unfortunately, there is no synonym control, precision, nor hierarchy among the terms (94-101). This makes it hard to use in a controlled cataloging setting of the library, but great to use on the web- it certainly made it easy for me to hone into my own interests on Delicious. Technorati seems like another great tool to use in searching, however there is alot of information to search through. I think that tags are a useful tool, however they do not always give you exactly what you may be looking for.You still must sift through the information or blogsites returned to find what you are looking for. Tags can be a very useful way of searching and can be an added tool to use, however you must realize that they are not a fool proof way of searching.
Courtney, N. (2007). Library 2.0 and beyond.. Westport, CT: Libraries Unlimited.