Those looking for effective practices in the subject areas of education, environment, human needs, program management, public safety, service affiliation, and volunteer management should check out the collection of links compiled by the Corporation for National and Community Service. I won't say that everything compiled there is helpful to everyone but there are a number of great ideas represented with links to extensive discussion of various effective practices. Just browsing through the collection I found one entry on improving neighborhoods with web-based community mapping; the site described efforts in Los Angeles (through the Neighborhood Knowledge Los Angeles project) to map out communities using property data in an attempt to locate neighborhoods in decline. Normally we don't cover efforts strictly driven by technology, there are a lot of blogs already out there doing that sort of reporting, but this initiative was particularly interesting for its marriage of technology with on-the-ground assets. Definitely worth your time if you haven't already browsed their offerings.