Del.icio.us was a big deal ~15 years ago. I made a Mac client for it (Pukka) that sold pretty well and the service was much talked-about in tech circles, not ju

Del.icio.us was a big deal ~15 years ago. I made a Mac client for it (Pukka) that sold pretty well and the service was much talked-about in tech circles, not just for researchers. This was in the early era of social networking as a whole ("Web 2.0") as well as this idea of "wisdom of crowds" for emergent context to bubble up from public tagging.