Merry Martin Luther King Jr. Day. [Examiner, Nature abhors a vacuum, SF Bay View, Beyond Chron]The TLDR spat between SF Bay Guardian and SF Weekly continues at a steady, confusing pace. [SFBG, Weekly]Voter registration deadline is tomorrow, kids. [SF Gate]Metallica's Kirk Hammett's Divisadero Street manse is still for sale. [Examiner]Facebook will get an executive chef, but workers might have to pay for their meals. How devastating. [Valleyvag]Temperatures drop . As does some snow. [Mercury......

Whoa! Check out the SF Solar Map! Using Googlemap tech, SF Environment and CH2MHill have teamed up to show you where the solar installations are throughout the city. And if you plug in your address, it'll give you approximate numbers on how much energy you could generate with solar, how much dough you'd save, and how much carbon you'd save the environment....

Playing the role of Shawn Fanning, minus the curls, the real estate retraction appears to be stealing theoretical dollars from the pockets of a member of Metallica. According to The Wall Street Journal guitarist Kirk Hammett has cut the asking price of his Pacific Heights mansion to a mere $10.5 million from the $12.5 million he'd been seeking since 2005....

We keep missing the rock-n-roll celebrity sightings around this city. Last week Kirk Hammett (Metallica) and Robert Trujillo (Suicidal Tendencies) were at Rock It Room on the night of the Madame Legal show we told you about. And then after playing two nights at the spacious and refined Palace of Fine Arts, Ryan Adams stole over to the tiny 12 Galaxies on Thursday night to jam with Phil Lesh. Friends who've known him or met......