Using the transcripts of Bill Gates' keynote from CES 2007 and Steve Jobs' keynote at Macworld 2007 (via Todd Bishop's Microsoft Blog) I created this relational tagcloud using Rhizome Navigation.
extisp.icio.us text gives you a random textual scattering of a user's tags, sized according to the number of times that they've used each of them, and leaves you to draw your own insights from the overlapping entrails.