I read a number of different websites each day- some of which are technology related, some social, some news, some political etc. It can be quite a pain visiting each site daily, finding the latest posts, reading etc.
So I decided to check out a feed aggregator. It basically gives you one location from which to view all your websites (providnig they have rss/atom/xml/etc feeds available). There are two types: software based and online based. Now only the unread posts are shown, they are all in one spot and it's sa-weet as.
I went with an online based type because I wanted to use an aggregator that didn't need to be installed and was accessible from multiple computers. I ended up choosing Bloglines.
Now, aggregators have been around for ages but I just haven't really seen the need for them – but, if you're reading over 10+ websites a day, I highly recommend spending the time looking for one and then using it. Sure has saved me time!