trbdavies writes: Last Saturday evening, standing on the corner of 24th and Church in san fran, my Nokia N810 found about 20 wifi signals, all but one of them locked down. And the unlocked one wouldn't validate. Earlier in this decade, there would have been fewer routers on that corner, but there would have been a few open ones. Others have complained about the disappearance of free wifi at cafes and the like. ShareYourWifi.org pushes back against this trend, but a campaign to bring back free wifi needs more than a website. How about t-shirts, stickers, and window signs?