I must say I prefer hints to answers (and I think what we have here today were hints).
It is a bit annoying when you unavoidably read an answer that has been given, though, and I would prefer it if people preceded those with a spoiler alert.
As to whether you should morally submit a crossword if you've had help, well, what constitutes help? Asking a friend, consulting a dictionary, Google? Prize crosswords are basically a lottery, and wouldn't work if you had to swear an affidavit that your solution was your own unaided work (like kids comps in the comics I used to read.