I really think it at least needs to give you the number of letters though. Some of the clues get really tough since you don't get any information - either number of letters or a few "given" letters from other clues like you get in crosswords.
Especially if you get "penalized" for keystrokes - there are some clues that end up as a lot of random guessing because so many things can solve them.
A good example - on Feb 19; I was guessing "New York" and "New York City" over and over because I was pretty convinced that's what it was. When I finally had to reveal it, finding out it wanted "NYC" was pretty frustrating.