Ok I know we aren't supposed to use Wikipedia as a creditable university source, but I thought since we spoke about wiki's earlier in the term, I thought it would fit anyway.
I searched the term 'Aggregator' on the Wikipedia website and this is what it had to say.
In computing, a feed aggregator, also known as a feed reader, news reader or simply aggregator, is client software or a Web application which aggregates syndicated web content such as news headlines, blogs, podcasts, and vlogs in a single location for easy viewing. (Wikipedia, 2009)
I checked out the Google Reader, and it's layout seemed familiar to me. I wondered where else I might have seen such feeds. After thinking and reading up more on what an aggreagtors purpose is, I've realised that I haven't just seen this in one place but on many different websites all over the web, such as news websites.
'Aggregator' 2009, Wikipedia, viewed 19th August, 2009,