Your comments

I think replacing 'promote' with 'share' would do more than enough to differentiate them. Favouriting adds it to your personal collection, sharing lets others see something you're enjoying. Simple - And widely understood!

Yes, please! I've had an import stuck at '60' for weeks. Of course the import system should be bug-free, but the ability to stop and re-start would be nice.

I think that shouts are important, because they offer a 'public' way of breaking the ice with people. You can post things that you're okay with everyone seeing, because not everything requires the formality of a note/private message - It's equivalent to how you can post messages on people's Facebook walls or Tweet at people. Glad to see this is being worked on!