Thread:Talk:Flow/Strengths of existing system/reply

Every discussion that someone else is involved in would be tagged with their username, as I see it (just as logs are, if you want to search logs by user). So yes, you could visit the stream of just those interactions. Right now, you can in theory search an individual user's contribs by namespace and see all of their edits to [user talk] pages. In this setup, as I understand it, you would be able to search for all interactions between users involving that user. (effectively the same thing).