A Cool Use For Flickr
Suppose you were a startup company trying to attract people to work for you. You wanted to sell yourself as a "cool place to work". One approach, taken by Exoweb is to have a Flickr group devoted to your company. Probably kind of obvious in retrospect, but I'm easily impressed.
I found this whilst mindlessly browsing through Flickr today and realising I hadn't checked out the Django/Python cluster in a while. Always interesting to see what people are doing there.
(I'm not associated with Exoweb in any fashion; I've never paid any particular attention to them until 20 minutes ago. Merely noting their cluefulness in this particular instance.)