Montana VISTAs use an MSN group. When I first started using it, no big deal, but the lack of features is really starting to bug me. I guess the main thing triggering this rant is for some reason, a significant number of e-mails from the group are bouncing. Yahoo is nice in that as a manager you can pull up the bounces and try and figure out why. I guess this is really just a nit-pick and a sign of a bit of frustration I'm experiencing this morning . . . since in reality a feature to track bounces isn't something that would be used by the masses.
The one huge difference between the two in my mind is that MSN threads their archives, with each message thread being more like a bulletin board, while Yahoo provides a chronological list of all messages posted. I'm leaning towards the latter since I prefer to search by poster, rather than topic.