That was something that happened a long time ago and is over with. Basically some jerk (it was NOT anyone at Flightsim.com)decided he had the copyrights to American Airlines planes and wanted to charge everyone making freeware versions with AA livery. A lot of toes got stepped on, a lot of hard feelings went around, and a lot of things got said that shouldn't have. I'll leave it at that because I don't want to stir up a hornets nest. The issue is dead and best left that way.
I remember that. I was unable to get any Reno Air MD-80's for my FS. And I believe it was American Airlines that did it. If I am not mistaking there is suppose to be a specail copyright for any one that uses AA or any of its other names
As far a where I go for my fills I hit the big three..flightsim.com, avsim.com and here. This site, as a few have stated, has the best forum. Each site has really good points about them. Avsim updates faster, search feature is ok. Flightsim updates can be a bit slow, the search feature is great, but for some it can be a pain to log on. Simvaition updates are ok, always can get on, search feature could be better. Not much for the percent of a match.