I haven't seen much discussion about 17-Clue Puzzles. I think they are interesting becase they are an ideal training ground for new players to get used to solving puzzles with just the basic techniques, which should build confidence and interest. 17s aren't particularly hard and I never have to use pencilmarks or a computer to solve them. Here are a few:

000000021700060000490000000000070900003800000020000000960000800000302000000100000

000000021800040000000000060090200000700000400000501000015000000000030900602000000

000000023000500080000100000020000900000400100580000000600009500000020070001000000

000000023300010000000500060400000700000106000000200000092000100000040800060000000

The other thing I have wondered about is why 17s are not particularly hard, even though they have the minimum number of clues. I assume it's becase for then to be solvable at all (to a unique solution) there must necessarily be some fairly obvious early moves. That's what I've found, anyway. We heard recently that a study had proved that there are no 16-clue puzzles with unique solutions. Has anyone heard of any studies being done on 17s, looking at the degree of difficulty?