Jaiku had [1] sorted. Replies would be displayed as a thread of comments under the original message. Pownce has a good approach to [0] with its enclosures/atta

Jaiku had [1] sorted. Replies would be displayed as a thread of comments under the original message. Pownce has a good approach to [0] with its enclosures/attachements which can be files, events, etc as well as links.