Comment 2 for bug 586663

Thoughts:
 * I really want this
 * This is probably a dupe
 * I think we'd actually get a bigger win from doing pubsubhubbub first
 * If Launchpad had a "push" mechanism like this or PSHB, then it would be great to have it integrated in launchpadlib so people could easily write asynchronous code (e.g. upload a package, tell me when it's done).
 * Raw performance of the webapp is more important than this
 * I hope that the work we plan on doing in https://dev.launchpad.net/LEP/PermissionsAndNotifications (scheduled for this year) will make doing this easy (or at least clean)
 * By that, I mean to say that we don't have a great internal model for "event that might be interesting to the user"
 * I don't really know what Foundations's remit is any more
 * I personally think stuff around performance, deployment and developer efficiency is more urgent than this

I hope that helps.