In summary, Diigo’s new sidebar is well designed. It allows me to focus on my work while, at the same time, giving me access to Diigo’s knowledge community. Improvements to Diigo Groups has turned this aspect of the Diigo community into a powerful way to distribute and refine knowledge among a team. And Diigo’s “varying degrees of non-intrusiveness” approach to social networking has infused a level of maturity into the social networking world that has been sorely lacking up to this point. There’s a lot of hype around Diigo right now, and the bottom line is that it’s well-deserved.