Quixote, it's not how I'd normally choose to describe myself, but yesterday I was one of the 'kibbitzers'. It was Tuesday, I'd finished the puzzle on Saturday morning - and hadn't had the foresight to keep a copy in case anyone needed help. Maybe I'll take photocopies every week - of Listener, Inquisitor, EV, the Times Prize Cryptic, the Times Jumbo... - just in case someone comes along and says 'Help with 39 D please'. Oh, and I'll put these in a folder and take them out every time I leave the house. The other day I helped out from a railway station platform. I'd looked in on the Forum while waiting for my delayed train.
If I had found any clue so tough that I was still grappling with it days later, I really would be quite happy to write out a clue even a verbose one. I'd trade five minutes of typing/posting for an hour of fruitless staring any day of the week.
Giving the clue also gives non-regulars the opportunity to see other puzzles. I like getting the chance to tackle the occasional Guardian or Azed clue. I've run out of space... but not opinions!