P: Password protect Galleries by Email Invite

For several years I have syncronised my family photos from Lightroom to Flickr or Smugmug. Wouldn't it be nice if Adobe took their share of this growing market by developing a useful solution? I find it easy to syncronise to Lightroom Web, but there's three very important features lacking. Fix these, and I'm all ears!

1.  Password protected galleries (or invite by email)
2.  A search bar for invited users (included searching in keywords, not just captions)
3.  More than just one gallery