I'm just happy people are creating; I haven't been picky either way. This community pre-dates DW and AO3, so I suspect the request was to keep people from linking to locked journals, not posting on a different publicly-viewable site. I made the AO3 collection earlier because people seem to like those but it's completely optional even if you use that site for archiving! Anyway, please post in a way that makes your work accessible to the community - that's the important part. ^_^