As a former City Councillor who supported E-Tools for community consultation, I observed some great examples of community social capital, including Web 2.0. So Toronto's Web 2.0 Summit sounds intriguing. Billed as an interactive forum to explore how Web 2.0 technology can change the way governments interact with citizens, create policies and make decisions - see agenda.
The Summit features Councillors, Community Groups, Council officials, industry reps eg Anthony D Williams of Wikinomics - "Government 2.0 :Unleashing Wikinomics in the City of Toronto". Also Mark Sturman, whose Keynote Address was well received. Interesting how he used Mozilla Wiki to develop speaker notes and invite collaboration, also referencing Beltzner's Changing the World slides (large). I liked Sacha Chua's blog posting on her experience as a Gen Y panelist.