Top-down and bottom-up planning are brushed aside in favor of the concept of a middle ground approach in the new book "Fast-Forward Urbanism: Rethinking Architecture's Engagement with the City". It could work, according to this review.
Jun 14, 2011   The Architect's Newspaper
This piece from Re:Place looks at the urban impact of kiosks and food carts.
Jul 13, 2010   re:place