Tags and folksonomies

I see how tags can be useful for people. I liked shelfari and librarything where reveiws can be written especially for bookclub use. Once again it is all very well and good for people with lots of spare time on their hands.

RSS feeds

I found RSS feeds didn't work all the time, which frustrated me. I can see it could be useful if you spent lots of time on a computer or if there was something you had to keep up to date with, especially for work.