We have been working away to get perms implemented in the release version of BuilderBot. It seems to work ok, but there are some session issues that are a bit tweaky. In fact we sent a copy of the pre-release application over to Jack at LL last night. We would like to be among the first to have registered status for SL. There have been a lot of tech issues getting this to run smoothly -- makes us wonder if LL isn't messing around with something somewhere to block 3rd party applications completely. 

LL's latest threat to kill accounts that use "unapproved" viewers has also stopped our testing on the SL grid for BuilderBot. No one, rightly so, wants to give LL a reason to delete their account (especially if they can copy their own stuff off the grid)

Linden Lab has always had lots of interesting ideas about many things. Many of these have been only partially implemented, many not implemented at all. You can look at this situation as opportunities or broken promises--Cyn's post about Content Management offers a mixed bag of both. The whole topic of intellectual property and digital content is complex and deep.

In fact just by using SL you have already copied other people's content to your computer which you only have limited rights to use. The existing SL TOS muddles a lot of this by actually taking ownership of everything you put into SL (see TOS 3.3). So probably LL which is a licence holder to your content and owner of the data would also have a claim on any outside SL usage of content (whether or not it is yours).  Linden probably could argue that while the textures you import are yours, the prims are in fact theirs and you are only modifying them.