Originally Posted by enjolras
Out of curiosity...what makes them "official"? Does the NFL hand out and actual award based on those?
They are the longest running (50+ years) and poll what are considered to be the largest and most knowledgeable groups of "experts". The others you may hear about seem to be simply one or a handful of people coming up with their own lists and they haven't been around for very long in comparison.
I don't believe the NFL actually has any actual partnership with the "official" all pro lists.