That's slightly different from my experience, in which I built a niche social network for music explorers, but it also has bookmarking features. I noticed a su

That's slightly different from my experience, in which I built a niche social network for music explorers, but it also has bookmarking features. I noticed a sustained usage from very few people (perhaps 10-20 users), even after a year. So clearly there's some value other than the social aspect of the site. Not sure what to make of it though.