Lamson Project Ideas
zedshaw.com
zedshaw.com
What I'd like to see is mass adoption of Jabber/XMPP, since it handles IM stuff, along with tons of other features. I think it could probably totally replace e-mail, since most servers and clients support offline messaging, so you can queue up messages even when you're not online. Also, imagine how everything would change if you used IM for password resets or signup confirmations, instead of having to wait a few minutes to get an e-mail with your info, it would be nearly instant.
Another cool possibility I see with Jabber mass-adoption is authentication. You could develop (if there isn't already) a way for people to login everywhere with only their jabber id, and then the site could just IM you to ask if it was really you who attempted to sign-in. This is a lot like OpenID, except I think alot faster and probably a lot easier to implement.
As a set of protocols, SMTP and IMAP are both pretty well-suited for the task they set out to accomplish. Furthermore, the delays you mentioned in message delivery are largely due to intermediate spam filters and store-and-forward queues, not inherent issues with email as a transfer mechanism.
One of the big differences between this approach and email is that it would be a prompt-based system, instead of a switch applications and click the link. By prompt-based I mean that it would pop up a window asking, instead of you having to go look for it (and possibly open Outlook, Mail, or some other heavy app thats not running 24/7 like most people leave IM messengers)
Must have been a long time ago - Exchange 2003 stopped doing that.