I have found a couple more thanks to this site: http://www.momathome.com/.There is Shadows, Simpy, Del.icio.us and BlinkList [although the latters site is not working]. Are there any more?
I am looking for services that are similar to del.icio.us so that I can add them to my AJAX based DeliTag. I am thinking that I can upload the tags to Del.icio.us and other services in one go.
[Via C#, .Net Framework]