business idea to think about

Each "bird" carries a document, which is automatically assigned a
string of numbers depending on the words it contains. Documents with a
lot of similar words have number strings of the same length and a
virtual bird will naturally fly with others carrying documents with
number strings of the same length.

When a new
article appears, software scans it for words similar to those in
existing articles and then files the document into an existing flock,
or creates a new one. The team has used the system to categorise online
news stories from CNN and the BBC. The next step will be to allow
people to click on a bird to display its document.

New Scientist