Lazyfeed is an interest feed for blog items. It indexes about 100,000 of the most popular blogs and organizes posts by topic. The hottest topics, as determined by related tags, pop up to the top. On the home page it shows you the hottest topics of the moment, which offers an easy entry point into the service. You can also do searches for particular tags, and the most recent posts with those tags start streaming into the reader. You can save tags as favorites in the side bar. and return to them. The service might include Twitter hashtags in the future, but right now it is focused on showing the most recent blog posts about a particular topic.
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If you are into information overload this is the system that will provide you more than you can handle. Give it a topic of interest. It goes off and searches and plops them into the reader. It also gives a list of associated topics. So just click on a few of them and information overload is on the way.
They classify, they present, they save [it is not clear if this is forever], and they do it all in realtime. They are the first reader to adopt rsscloud for realtime.