The tagged questions atom-feed lags behind about 4 minutes and i probably do not need to mention how long those filter emails take. This won't do at all for competitive question answering, i demand instant notifications of some description!
(I am being serious by the way)
Edit: As this request is faring just fabulously i will in all likelihood have to whip up yet another script or micro-app to get me the questions directly from the html-pages. But don't expect me to share that with you downers who are in denial, ha!