As always Colin, well said.
I'm tempted to agree with Andy too - there are two things which all airliners.net contributors have in common: one is a camera, and the other is the internet!
Almost every subtype (especially those from Boeing/McDD/Airbus) are listed on authoritative sites. I apologise to those already in the know, but the real gem is here (the new location for the legendary Bill Harms lists): http://www.jetphotos.net/census/
Of course the FAA and CAA also maintain their own databases at:
It usually takes less than a couple of minutes to locate the right info, and like I said, everybody here by definition has internet access!
It also seems strange to me that somebody would upload a "737-..." when the past four pictures of that aircraft on a.net show as "737-8AS" (just an example!).
I would prefer that I waste 2 minutes of my time on getting the info right for each photo, rather than the database correction team spending weeks trying to retrospectively fix errors and omissions. However, that's just my opinion!