Twitter

I find Twitter as a growing online phenomenon to be largely not useful. Though one possible use may be for organizations or bands to post event's news and shows. I think facebook and myspace cover most of the areas that Twitter would be advantageous to use.

LibraryThing

My favorite part of LibraryThing is the recommend function.
I found it quite accurate at suggesting books I may be interested in.

Online Productivity Tools

I could definitely see myself using these online tools more often rather than using traditional methods. The biggest advantage would probably be that the software is completely free. The software is also accessible through any computer connected to the Internet and is syncable with allot of pre-existing programs.

Flikr & YouTube

I'd say that both these sites offer media content that is useful for educational and entertainment purposes. Even though you may not find all search hits being of quality to you as an individual, the vast amount of files on either site bring allot of choice.

RSS

I was successful at setting up my RSS feed.
Yes, it made information gathering a bit easier. Instead of trying to track down blogs I had read before that I still wanted to follow, I received real time updates from my feed.