CPL 2.0 Twitter

I have gone to the Twitter site and searched for various topics. I am singularly unimpressed with what I found.
This "fast-growing online phenomenon" appears to consist of a mind-numbing quantity of vacuous postings by puerile individuals who have nothing intelligent to say.
I find it difficult to take seriously a site called "Twitter" which posts "tweets". I will not be visiting Twitter again.

CPL 2.0 Library Thing

I was able to find several of my favourite books on Library Thing.
I already receive email notification when many of my favourite authors release a new book and I use Amazon frequently to read reviews of books.
Library Thing was very user friendly and easy to navigate but I don't need it. I haven't the time or inclination to tag my favourites and I can usually find new books through other means. This site is just one in a long list of sources for information on books that I may or may not use from time to time.

CPL 2.0 Online Productivity Tools

I created an online calendar through my Google account.
I don't expect to ever use it as my paper daytimer doesn't require me to log in, have an available computer or mobile phone and is always at hand.
If I had to use one of these tools on a regular basis, it would probably be one of the Google Docs applications as they are portable and can be accessed from anywhere.

CPL 2.0 Flickr & You Tube

It is necessary to sign up for an account in order to access Flickr; this is not as user friendly a procedure as simply logging in to You Tube.
As I have neither a cell phone nor a camera, I have little use for a site to assist in the editing of photographs. I may have occasion to view photos of certain subject material but I doubt that Flickr would be the place I would choose to do this.
You Tube, on the other hand, is easily accessed and provides a great variety of subject material on video; Susan Boyle's performance on Britain's Got Talent is wonderful and there are videos on cooking, animation, automobiles, fitness workouts and on virtually any subject that comes to mind.
I prefer You Tube to Flickr and find it vastly superior in entertainment value and usefulness. Individuals who enjoy photography would, perhaps, like Flickr better but it seems to me that the choice between the two products would be heavily influenced by personal interests.

CPL 2.0 RSS

I signed up for a Bloglines account and added a feed to ESPN.
I find that RSS is very cumbersome to use. If there is a sports story I am interested in following, this is the last place I would choose to access it from.