Robin2:
Why is this discussion here rather than in the much more popular (and thus more useful) Project Guidance or Programming Questions sections?
Essentially because I was not sure it fitted in "Project Guidance" and I do not follow "Programming Questions" (if only because it seems a little complex and requires more detailed attention) so when I looked at the groups available, this one seemed as good as any. 
I tend to see those groups as places for questions to be asked, rather than examples to be offered. I am certainly more than happy for any moderator to re-locate the thread if they feel somewhere else more appropriate.
Robin2:
I suspect the problem is that there is no easy way for newbies to find the many existing useful examples without help - i.e. when they don't know what to search for.
This is a general problem with "forums" with innumerable "threads" streaming away and no fixed "root" structure. A Wiki (in addition) would seem more appropriate.