A history of 6th Street. upfromthedeep.com/sixth-street/ (documented by resident historian, @tobiemarx)

Tactical Urbanism invests in temporary projects to activate unused land. @spur_urbanist covers the case of Hayes Valley spur.org/publications/l…

Get your local news fix. Here's a list: twitter.com/#!/TwitterSF/l… #localmatters

Community storytelling. southhillcommunity.ca/insidestories/ Someone should build a site like this for neighborhoods in #SF!

Twitter launches official 'Ads for Good' service, applications being accepted now tnw.to/1CFpR by @thatdrew on @tnwtwit

@kg Thanks! We look forward to working with many more local organizations to help them amplify their positive efforts. (cc @GAFFTA)

Announcing a new "Twitter Ads for Good" program just for SF non-profits. Congrats to @GAFFTA our first local recipient. advertising.twitter.com/2011/12/twitte…

Related reading on homeless families in need of support: blog.sfgate.com/kalw/2011/12/1…

#VolunteerSF Make gingerbread houses with kids at the @compassSF family shelter on 12/22! compass-sf.org/news/85-make-a…

Murals of the Tenderloin. Which is your favorite? sfmuralarts.com/neighborhood/d… (via @sfmuralarts)

Correction: via @THEbolditalic

Cool Tenderloin-inspired art project that benefits the subject of each portrait. Voice to the Voiceless thebolditalic.com/nico/stories/1… via @bolditalic

If you #bikeSF, you'll appreciate this collaboration between @SanFranciscoTA and @sfbike good.is/post/light-up-… Bike lights for all!

How art & culture can foster economic & community development: media.redclaycms.com/sites/166/docu… (a beautiful report by @pubarch & @SFAC)

@michaelmccarthy Great tip. Look forward to listening when the audio is online. @compasssf we should meet & chat about the neighborhood!

@bcasement one thing the area needs is more visitors to enliven the streets. hopefully our ~1500 employees will help with that. #blockparty

Our future office was constructed in the same year as the Golden Gate Bridge, 1933. Here's some preserved detail: twitter.com/TwitterSF/stat…

At a press event in our future home launching the new version of Twitter. Current state of interior design: minimalist twitter.com/TwitterSF/stat…

@nickbilton normally 5 years, but since you're verified...

@pintobeans2885 We can't wait to be a part of it. See you around, neighbor!