I got some interesting (to say the least) feedback following the Ode to Metamucil post, but in further proof of the power of the Blogosphere, I invite you to read the comments to it.
I wrote back to the brand manager for Metamucil at Procter & Gamble (kudos for finding my post; ding for taking a week to respond).
Here's what I got this AM from him:
My team at Procter & Gamble manages the Metamucil brand and we got a kick out of your blog. I'd love to send you some free product. We're actually launching a new flavor in the coming days (first new flavor for the brand in over 20 years). If you're interested - please provide your address and we can send out a a few samples.
You can rest assured I'll be reviewing the new flavor. :-)
For additional proof on the power of Blogs to reach companies, see this post on NetBank and this one on LinkedIn (read comments).