L4 switches and IP redirectors are, unless we're missing something, the two most ubiquitous methods of HTTP redirection for transparent caching. We've seen a discussion of policy based routing and WCCP that didn't even include accurate information. One vendor would even have us believe that WCCP is on the verge of starting the IETF standardization process, when that is not apparently true. I welcome accurate discussion, but this list is rife with vendor hyperbole, I won't name the vendors, you can draw your own conclusions. Please leave the poofy sales pitches for your sales calls folks, please.
Lets have a discussion on clear facts and real capabilities.