I have a serious question for you social bookmarking types out there. I’ve been playing with spurl.net for the last hour or so and I’m really puzzled. It’s not a terrible site by any means, but I’m having real trouble figuring out what kind of usage patterns explain its apparently extraordinary number of URLs and users. It’s got some nice features here and there (liking the archives of top links for previous weeks, for example) but basically I’m stuck and cannot really figure out how or why people choose spurl over any of the other (many dozens) of social bookmarking sites out there. But there must be a reason because so many people are doing it. Any Spurl users out there who can explain their preference?