I have heard many a rumor going around in the Guild Wars 2 community that you get a hidden magic find buff if you are in a party of five. After looking everywhere I have found no evidence of this claim, and yet...I still create parties of random people just to get a potentially hidden buff. Every little bit counts, right? (I have a full MF set of armor, with food I sit at +139%)
Is there a hidden magic find buff for being in a party of five people? If so, how much additional MF% is it?