[binxbolling]

I've been wrestling with this, too. Right now my GTD Inbox list is just empty, because if I'm going into Trello, I might as well put the item where it belongs (whether Next Actions, Waiting On, etc). I guess I'm looking for my Inbox to be populated with stuff that arrived outside of Trello.

I might be wrong on this because I'm relatively new to Trello and GTD, but I also didn't see a way to tag cards, which seems really useful.

[Robin_Message]

You can adopt a convention (like #tag) and then search/filter cards with that tag pretty easily. It's not built in tagging support, but I'm not sure if GTD actually requires more than that.

[pinko]

It might be possible to write an IMAP interface to Trello, so it just shows up as another email account you can file emails into (Board -> Folder, Title -> Subject, etc.).

[djloche]

Click on a card -> add a label.