Nice bear
It is indeed a very fine line and a difficult call sometimes. However, a direct link to an airline will be deleted. I think that has been explained in the sticky above. It's not fair on the Site nor those advertisers that support us. Quite frankly we don't have the time to troll through a thread and work out the individual motivation of every poster. We understand that posters quote sources, generally if they secondary we let them go. We also know that posters use this forum for free advertising.
In the end of course...Moderators' discretion.
Thank you.