I am familiar with alerts and feeds and readers - Google reader is my choice, and my Bloglines account is still in use. I have not used Yahoo in so long and had forgotten that I had set up some Yahoo alerts ages ago. I set up a new alert just for fun, and up popped my Yahoo alerts page with all my previous subscriptions. This included comics such as Calvin and Hobbes, Garfield, Foxtrot and Doonesbury. I have work to do and resist the urge to be sidetracked!
I think that Feed43, FeedBeater, Feed Rinse and Feed Sifter are all excellent and potentially very useful sites. I loved the name RSSPECT and the fact that 'AnySite' is not merely for following any webpage, but also an mp3 file or PDF documents.
The interior of the "Marble Cube," Yale University's Beinecke Rare Books and Manuscripts Library.
It's everywhere, and it can be a problem to keep track of all the news, sports, weather and blogs you follow. This is where RSS, a web feed, can help by checking your subscribed feeds for any updates, and downloading them automatically to your reader or email.
Google Reader is a good example of a feed reader. I have found it easy to use and organise.
I created a Bloglines account and subscribed to a number of feeds, but I must say that while similar to my Google Reader, I prefer the latter. Ease of use, and perhaps familiarity, influenced my choice. I also joined Technorati and favourited (modern internet terminology, really...) a few blogs, and have added a link button on my page that would enable browsers, the human variety, to add my blog to their feeds.