This is a simple idea which uses ASCII (the core of everything) and the SL wind with the bubble script i found in a freebe object. The text is floating around and if the invisible tiny cube which is the host of the text collides with other prims or avatars it will be deleted. Now the text is always the same but a script could suck content from a webpage, RSS feed, googel or a spider is hunting phrases from the world wide web.

Off-Topic: Just want to mention a ASCII-ART game Øverkill – hell in ascii