Decoding the marketing speak, I'd say Google makes more money off its other programs, so Google is axing Affiliate Network in favor of those. Publishers are expected to move to AdSense CPC/CPI, and given how little competition there is, few customers will leave.
“we’ve made the difficult decision to retire Google Affiliate Network and focus on other products that are driving great results for clients.”
Postini as we've know it is shutting down. Google is forcing their Customers to move to Google Apps. I have several Customers who have been using Postini for multiple years each and I'm expecting a rough patch when we start being forced to "transition". As of the last "webinar" I attended w/ Google people there still isn't feature parity for the end user-facing portion of the service for those of us who still have on-premise email servers.
Yes, I read that page before they shut down my account. They sent it to me repeatedly, saying I needed to move everything to Google Apps. Completely ignores the fact that some features in Postini are not available in Apps; that Apps is several times more expensive; and that Apps includes a range of apps that are completely unneeded (if I wanted Apps, I would have signed up for it instead of Postini to begin with).
Edit: I should rephrase: they did not "shut down" my account. They just informed me I would no longer be eligible to renew my account when my subscription expired.