1. Why do you think there are so many sites (Digg, Delicious, Reddit, etc.) that basically serve the same function?
2. What is the value of having these sites (Digg and Delicious, specifically) target different user bases?
3. What is the value of social bookmarking sites in a Web 2.0 era?
4. Do your friends use these sites? If not, would their participation encourage you to participate?
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