Jon, the tag pickup image you posted was in WebP format, a new image format that’s currently supported natively only in Chrome and Opera. People using other browsers like Firefox or IE or Safari can’t see it (unless the web site with the image does special tricks, which this one doesn’t). It’s probably better to avoid the new format until it’s better-supported.
Is everyone else having trouble getting to this page too? Seems like we may need a new Tag-o-Rama thread.
I snapped that pic a while ago. (2014.04 .06 @ 16:52, according to the image file; are digital cameras cool or what?) Posting it as a pickup would thus violate the game’s temporal-ordering constraint on tags.
So, do I need to schlep down there, to expiate my presumption?
Comment on @Stu’s post: These things are darn hard to spot, even if you know where they are. I think that’s part of their charm. One tip: For the most part the tiles are positioned for benefit of pedestrians.