I hope we don't need to get into any form of Personal Attack. PAs are so unnecessary and spoil the gathering. - All the answers have been fascinating, thank you everyone! There are so many different approaches. The poll result is very interesting as well, even if a few could not find an option fitting them.
What seems clear is that a lot of folk here hear a tune played, and work on learning it by using notation, bearing in mind what they could hear, or listen to from a recording. What the poll does not reveal is the sources for the notation (apart for those writing it down themselves, and I admire your skill in this!).
When I search via google for a tune name, often
http://thesession.org comes up pretty much top, whereas
http://abcnotation.com perhaps on page 2. This means that thesession.org is a primary source when people look up tunes on the web, and this trend re-enforces itself, because it comes up top in the search. But the tune shown very often has transcription errors, or is a lousy version. That may be pointed out in the comments, and better versions given there. But how many will read through the comments, and paste other abcs into their editor to see and compare scores, and then work through the variations?
It seems to me better to look up a number of versions, when working with scores. The search at abcnotation.com does exactly that, but googling a tune name and looking up the abcnotation.com result shows only one version. So this is not ideal. I'd like a result showing a number of notation versions underneath each other.
The other interesting poll result is the lack of use of midi. Now this is good, giving the mechanical quality of playback. It also means, I think, that midi files or playback on trad music resource sites like thesession.org or abcnotation.com could be scrapped and abandoned, for the general benefit of the music.
One other interesting result is the rarity of personal being taught a tune. I know it does happen in workshops, and some teachers take great pain teaching aurally only. But I'd like to see more aural teaching "on the street" (or in the kitchen). The problem is it takes a lot of time, and we are all rushed to do so many other things. It probably is a victim of culture trends, i.e. TV.