Someone has created a Facebook group devoted to the new pedestrian plaza on 17th Street at Castro and Market. Be sure to check it out and add your own commentary and photos. From what I can tell from the photo gallery, the warm weather made the plaza a pretty popular neighborhood amenity in its first weekend:
According to a Wall post from July 4 at 1:30 pm. I've added it to the list of Important Dates in the sidebar.
For more information visit peopleinplazas.org