A twitter2speech pipe (audio from expressivo) that will read out tweets sent to a particular user; the audio is added as an enclosure to the twitter feed. If you subscribe to the pipe feed in a grazr widget (http://grazr.com), you can play the tweets in there... It works even better if you just add…

Provide a a tag and get an aggregated feed of items tagged that way on flickr, delicious, slideshare and twitter, topped up with a google blogsearch on the same tag.