We just checked in on SocketSite. Since London's one of our favorite escapes, we were curious about the current state of the comments on the San Francisco to London Neighborhood Comparison post we slinked to yesterday. And that's how we found sfnewsletter's Tour de San Francisco. Started last November, "sfnewsletter offers a fast, fun, and fresh look at today's San Francisco real estate market. The Tour de San Francisco is our version of the great cycling race, where we tour through our nano-markets around town, because in San Francisco, it truly does come down to the block." Photos, descriptions, fascinating. Oh dear, another time suck.