Justice
Where Bicycles Are Stolen in San Francisco
And these are only the ones that get reported.
Where are bike poachers most active in San Francisco? For an answer, try scanning this enlightening map from data outfit Seismograph: It shows the 813 reported bicycle thefts of 2013 laid out as angry-red blotches (much like the ones on your face the last time this happened to you).
Smaller circles represent one purloined bike; the concentric, target-looking circles show the sites of multiple thefts. Write the folks at Seismograph (motto: "To be honest, we're not entirely sure what Seismograph is yet"):