In March 2007 McKinsey published the findings of a global survey, entitled How businesses are using Web 2.0. RSS and Podcasts rank #5 and #6 out of nine Web 2.0 technologies when asked: "Is your company investing in any of the following technologies or tools? - Yes: Using or planning to use." The survey itself was conducted in January.
We are continuing to benchmark the top consulting companies along the VAULT ranking (management and technology) #11 upwards concerning their use of RSS and Podcasts. Check back regularly or subscribe via feed/ newsletter to get the results. Data for the Top 10 players can be found in an earlier post.
Citation:
Gartner (No RSS, no Podcast), Research Study, March 2006: "Podcasting is a new, low-cost, high-impact form of audio content delivery that's ready to be exploited for training and general information delivery. Enterprises should review their communication and training strategies to find places where podcasting would be valuable."
The data:
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Get the 
There is a wall of silence. We sent out 15 requests for comment to media relation contacts of the companies above and the only result so far: Hewitt's decline. Let's wait.
We have received feedback from Hewitt:
"Thank you so much for considering us for this survey. At this time, we respectfully decline to participate. Thank you!
~Catherine Brandt
Catherine Brandt
Public Relations
Hewitt Associates"