How can I rate an app in Honeycomb? Seems like I can't find out how to do the basics on my Honeycomb tablet.  How do you rate an app in the Market?
As your comment suggested on the other answer (now deleted), you can't.

The Android Marketplace app on Honeycomb seems to be very close to the web version which (at the time of posting) didn't allow ratings/comments. 

Sorry to be the bearer of bad news!