Android - How to rate an app in Android Market on a tablet?

The first versions of the Android Market on Tablets didn't have an option to rate an App. Rumors are that Google wanted to prevent bad ratings on Apps, because they weren't optimized for tables (yet).

Some say that they received an Market Update that enabled the rate function. My Lenovo Thinkpad Market hasn't got it yet. But it seems just a matter of time.

Until then, you can rate Apps on the web version of the Market.