At the 35th annual international meeting of the Computer Measurement Group (see link), I presented our measurements of the cloud. Bits of an earlier analysis were posted on petersgriddle over a year ago (see cloud tag).
This presentation is now available with audio and Q&A on slideshare (follow link).
I was rather pleased with the process of putting it on slideshare. The online tool at slideshare to synchronise slides with audio worked fairly well.