OK, I think now I've seen everything:
Seriously, YYYY-DD-MM? What the heck? What is the point of that, other than to sow confusion? It doesn't have any nice properties (unlike, say, YYYY-MM-DD, for which the natural and lexicographic order coincide), it's not used in any culture, and it introduces ambiguousness where none existed before, bringing the problems with DD-MM-YYYY and MM-DD-YYYY to YYYY-MM-DD.
On that note, I really wish we'd all just use YYYY-MM-DD already and get rid of the rest. Myself, I've not been using anything else in at least half a decade myself (other than whan I slip and fall back to the traditional German DD-MM-YYYY, but that's a very rare occurrence nowadays); I don't expect everyone else to follow suit immediately, but at the very least, it'd be nice if people accomodated for international standards.
Anyhow, as far as Second Life is concerned, I'm mostly amused; it's just so absurd. :)
Actually, I've seen this before, but chances are it was just a mistake then. Of course, chances are that it's just a mistake on the Second Life site, too, but they have much less of an excuse for not having caught this.
2. For example, a few years ago, when I wanted to book a train ticket through the Deutsche Bahn website, I found that they did not recognize YYYY-MM-DD dates at all, and when I got in touch with them and suggested that they rectify this (seeing as there was a standard), they told me that they were already aware of the issue but would not fix it. AAMOF, it still doesn't work now that I'm writing this, either.