Reminder: We know San Francisco is turning into a playground for cyclists - and with good reason, since they are clearly doing God's work - but please do not haul your green machine up escalators, bike riders. Rules dictate that you must take the stairs. Why? Because you typically block the path for those of us who want to walk on the left. And sometimes your gears or whatnot touch our pristine attire. Also, you don't always smell so fresh. So there's that added bonus.
However, if you must ride the escalator, even though you shouldn't, please stand on the right. Heavn forbid, we won't go so far as to call you an "idiot," like the angry man who crafted this image does, but we do find it intolerable and a bit too consistent as of late.
Akit's Complaint Department has a sound rant about bikes and escalators. Be sure to check it out.