We have a new in-depth presentation on our neighborhood-level Issues Forum work: http://blog.e-democracy.org/posts/1215 (the audio version is at the bottom) While Hampton's i-neighbors.org site and the practice of Front Porch Forum recommends small typically private (not in Google) covering areas with around 500 residents, we've found our sweet spot at ~10,000 residents, in very public (therefore accessible) online spaces. We've further found that when you reach 10% of households (one member ~one household) the online exchange becomes quite self-generative. I am curious if others have explored these variables and compared either the user satisfaction with these differing models or any differences in the content exchanged? We do see real value private small scale electronic block clubs (covering under 100 households) out there that we are exploring - http://beneighbors.org - but with our Inclusive Social Media work - http://e-democracy.org/inclusion -with lower income, high immigrant communities, the word of mouth "virtual gated community" approach in larger areas seems to work against that goal. (On the other hand, the concern about over exposure online can be a limiting factor for many, but our foundation is civic engagement in public life.) So any researchers working on these questions out there? Let's connect offline and here: http://e-democracy.org/locals We'd love to see some deeper analysis of what is going on across our dynamic network - http://tcneighbors.org including my own neighborhood with over 750 members reaching ~17% of households - http://e-democracy.org/se . On a related note, I'd love to put a number to the comparable "likers" needed on a community-based Facebook Page, then Groups and neighborhood e-mail lists to generate similar traffic. Perhaps the best against the best ... my sense is that you need 10+ likers to generate the value of one e-list member in critical mass online spaces. It could be much higher. Steven Clift E-Democracy.org P.S. Please cc: clift@e-democracy.org