I love wikipedia.org!!! I was looking for a list of sites which use tags. Ofcourse google would only pop-up the big companies and sites with advertisements. A quick query @ wikipedia for tag gave me this neat list: http://en.wikipedia.org/wiki/Tags#Online_services_and_their_tagged_objects Probably not exhaustive, but good enough for me

Then i started wondering … how social are these ’social network through tagging’-sites to eachother? So i started a crawl with this list as startingpoints in our beloved issuecrawler. Results when i get through the queue :p