I'm attempting to augment elgg and make it a bit more like google docs (User uploads a file or adds a bookmark, and can share the content with others) 

File_tools augmented with access_plus has allowed me to share files with groups, however, I want to be able to share a file with a specific friend. 

I've mucked around the code, and it appears to be linked the access_lists, but I'm unsure if this means I must create a new access list for each file...and the impact this would have.

Is there a way to share content with specific friends in elgg? (ideally privately) The idea being that a user could create a file, and share it with a friend in either read or read-write format. The friend would then see the file added to his files.

Thanks again!

Pierre