I guess most of you have seen sites or blogs where you get a list of different feeds to subscribe to when you click on the little feed icon in the browser address bar.  The question is how do they do that and also is it useful for you?

Will Twitter start charging for their services or not? First Sitepoint published the news that they (Twitter) have plans for charing people to follow premium accounts in Japan, but then Twitter posted a blog post that that’s just a misunderstanding….