Well, I used to have the setup to get those, but I stopped a while ago. You didn't need a proxy to get the actual stories, but it appears you did need to have a proxy to get the listing page; the stories you could get with a simple Referrer change, but you had to guess at the URL. They also started deleting them once there were too many, so I missed archiving some because I waited too long.
I'm not 100% certain, but I think the general idea of the story is that an anon finds a bunch of yukkuri that are deathly afraid of the black asphalt part of roads and the anon then trolls the hell out of them using this premise.
It would explain why another picture for this anko has a marisa trying to use it's hat as a raft to get off the road.