Huxley is on the trail of a heart-shaped mystery: Around Fairmount, in south Noe Valley and Glen Park, are a number of sewer vent covers painted with a heart and a superimposed question mark and exclamation point (aka an 'interrobang'). He's found 26 so far. What do they mean? Mail huxley at eagerbeagle dot com if you know the secret.
Now with photos!